Forgotten patches

7 files changed, 5706 insertions, 0 deletions

diff --git a/ARM-dts-bcm283x-Several-DTS-improvements.patch b/ARM-dts-bcm283x-Several-DTS-improvements.patch
new file mode 100644
index 000000000..807903afa
--- /dev/null
+++ b/ARM-dts-bcm283x-Several-DTS-improvements.patch
@@ -0,0 +1,1130 @@
+From patchwork Sat Jan 12 12:43:23 2019
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 1/6] ARM: dts: bcm283x: Fix DTC warning for memory node
+Date: Sat, 12 Jan 2019 13:43:23 +0100
+Message-Id: <1547297008-2740-2-git-send-email-stefan.wahren@i2se.com>
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+Cc: Gottfried Haider <gottfried.haider@gmail.com>, devicetree@vger.kernel.org,
+ Stefan Wahren <stefan.wahren@i2se.com>, Phil Elwell <phil@raspberrypi.org>,
+ bcm-kernel-feedback-list@broadcom.com, Peter Robinson <pbrobinson@gmail.com>,
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+Compiling the bcm283x DTS with W=1 leads to the following warning:
+
+Warning (unit_address_vs_reg): /memory: node has a reg or ranges property,
+but no unit name
+
+Fix this by adding the unit address.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi.dtsi         | 2 +-
+ arch/arm/boot/dts/bcm2836-rpi-2-b.dts      | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-3-b.dts      | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi     | 2 +-
+ 6 files changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index c6e2b23..e490f2a 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -1,7 +1,7 @@
+ #include <dt-bindings/power/raspberrypi-power.h>
+ 
+ / {
+-	memory {
++	memory@0 {
+ 		device_type = "memory";
+ 		reg = <0 0x10000000>;
+ 	};
+diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+index ac4408b..871fc4a 100644
+--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+@@ -9,7 +9,7 @@
+ 	compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
+ 	model = "Raspberry Pi 2 Model B";
+ 
+-	memory {
++	memory@0 {
+ 		reg = <0 0x40000000>;
+ 	};
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+index e9fadd3..7f4437a 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+@@ -13,7 +13,7 @@
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
+-	memory {
++	memory@0 {
+ 		reg = <0 0x20000000>;
+ 	};
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+index 42bb090..7d65013 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+@@ -14,7 +14,7 @@
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
+-	memory {
++	memory@0 {
+ 		reg = <0 0x40000000>;
+ 	};
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+index 0c155dd..9abb9c5 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+@@ -14,7 +14,7 @@
+ 		stdout-path = "serial1:115200n8";
+ 	};
+ 
+-	memory {
++	memory@0 {
+ 		reg = <0 0x40000000>;
+ 	};
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+index 4a89a18..81399b2 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
++++ b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+@@ -4,7 +4,7 @@
+ #include "bcm2836-rpi.dtsi"
+ 
+ / {
+-	memory {
++	memory@0 {
+ 		reg = <0 0x40000000>;
+ 	};
+ 
+
+From patchwork Sat Jan 12 12:43:24 2019
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 2/6] ARM: dts: bcm2835-rpi: Drop unnecessary
+ #address-cells/#size-cells
+Date: Sat, 12 Jan 2019 13:43:24 +0100
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+Compiling the bcm2835-rpi.dtsi with W=1 leads to the following warning:
+
+Warning (avoid_unnecessary_addr_size): /soc/firmware: unnecessary
+ #address-cells/#size-cells without "ranges" or child "reg" property
+
+Fix this by removing these unnecessary properties.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi.dtsi | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index e490f2a..715d50c 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -19,8 +19,6 @@
+ 	soc {
+ 		firmware: firmware {
+ 			compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
+-			#address-cells = <0>;
+-			#size-cells = <0>;
+ 			mboxes = <&mailbox>;
+ 		};
+ 
+
+From patchwork Sat Jan 12 12:43:25 2019
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+ id 1N49Qd-1hPmUb47ST-0101Wy; Sat, 12 Jan 2019 13:44:01 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 3/6] ARM: dts: bcm2835: Fix labels for GPIO 0,1
+Date: Sat, 12 Jan 2019 13:43:25 +0100
+Message-Id: <1547297008-2740-4-git-send-email-stefan.wahren@i2se.com>
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+Cc: Gottfried Haider <gottfried.haider@gmail.com>, devicetree@vger.kernel.org,
+ Stefan Wahren <stefan.wahren@i2se.com>, Phil Elwell <phil@raspberrypi.org>,
+ bcm-kernel-feedback-list@broadcom.com, Peter Robinson <pbrobinson@gmail.com>,
+ linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org
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+
+According to the schematics for all RPis with a 40 pin header,
+the GPIOs 0 and 1 are labeled as ID_SD and ID_SC. In order to
+clarify that is a I2C bus, append the third letter.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 4 ++--
+ arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 4 ++--
+ arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 4 ++--
+ arch/arm/boot/dts/bcm2835-rpi-zero.dts   | 4 ++--
+ 4 files changed, 8 insertions(+), 8 deletions(-)
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+index 2cd9c5e..db8a601 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+@@ -31,8 +31,8 @@
+ 	 * "FOO" = GPIO line named "FOO" on the schematic
+ 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ 	 */
+-	gpio-line-names = "SDA0",
+-			  "SCL0",
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
+ 			  "SDA1",
+ 			  "SCL1",
+ 			  "GPIO_GCLK",
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+index cfbdaac..1e40d67 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+@@ -33,8 +33,8 @@
+ 	 * "FOO" = GPIO line named "FOO" on the schematic
+ 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ 	 */
+-	gpio-line-names = "SDA0",
+-			  "SCL0",
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
+ 			  "SDA1",
+ 			  "SCL1",
+ 			  "GPIO_GCLK",
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+index 644d907..5765d34 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+@@ -40,8 +40,8 @@
+ 	 * "FOO" = GPIO line named "FOO" on the schematic
+ 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ 	 */
+-	gpio-line-names = "GPIO0",
+-			  "GPIO1",
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
+ 			  "SDA1",
+ 			  "SCL1",
+ 			  "GPIO_GCLK",
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+index 00323ba..3b35a8a 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+@@ -28,8 +28,8 @@
+ 	 * "FOO" = GPIO line named "FOO" on the schematic
+ 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
+ 	 */
+-	gpio-line-names = "SDA0",
+-			  "SCL0",
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
+ 			  "SDA1",
+ 			  "SCL1",
+ 			  "GPIO_GCLK",
+
+From patchwork Sat Jan 12 12:43:26 2019
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 4/6] ARM: dts: bcm2837-rpi-3-b: Use consistent label for HDMI
+ hotplug
+Date: Sat, 12 Jan 2019 13:43:26 +0100
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+This make the GPIO label for HDMI hotplug more consistent to the other
+boards.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+index 9abb9c5..31b1c03 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+@@ -39,7 +39,7 @@
+ 				  "WL_ON",
+ 				  "STATUS_LED",
+ 				  "LAN_RUN",
+-				  "HPD_N",
++				  "HDMI_HPD_N",
+ 				  "CAM_GPIO0",
+ 				  "CAM_GPIO1",
+ 				  "PWR_LOW_N";
+
+From patchwork Sat Jan 12 12:43:27 2019
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 5/6] ARM: dts: bcm2837-rpi-3-b-plus: Clarify label for
+ STATUS_LED
+Date: Sat, 12 Jan 2019 13:43:27 +0100
+Message-Id: <1547297008-2740-6-git-send-email-stefan.wahren@i2se.com>
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+Cc: Gottfried Haider <gottfried.haider@gmail.com>, devicetree@vger.kernel.org,
+ Stefan Wahren <stefan.wahren@i2se.com>, Phil Elwell <phil@raspberrypi.org>,
+ bcm-kernel-feedback-list@broadcom.com, Peter Robinson <pbrobinson@gmail.com>,
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+The RPI 3 B+ provides control to both LEDs (PWR and ACT). So append
+the first letter of the LED color (like in the schematics) in order
+to clarify this.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+index 7d65013..d3ec6cd 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+@@ -42,7 +42,7 @@
+ 		#gpio-cells = <2>;
+ 		gpio-line-names = "BT_ON",
+ 				  "WL_ON",
+-				  "STATUS_LED",
++				  "STATUS_LED_R",
+ 				  "LAN_RUN",
+ 				  "",
+ 				  "CAM_GPIO0",
+
+From patchwork Sat Jan 12 12:43:28 2019
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+ id 1MdNLi-1hHMPa2aSu-00ZS8f; Sat, 12 Jan 2019 13:44:02 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>
+Subject: [PATCH 6/6] ARM: dts: bcm283x: Add missing GPIO line names
+Date: Sat, 12 Jan 2019 13:43:28 +0100
+Message-Id: <1547297008-2740-7-git-send-email-stefan.wahren@i2se.com>
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+Cc: Gottfried Haider <gottfried.haider@gmail.com>, devicetree@vger.kernel.org,
+ Stefan Wahren <stefan.wahren@i2se.com>, Phil Elwell <phil@raspberrypi.org>,
+ bcm-kernel-feedback-list@broadcom.com, Peter Robinson <pbrobinson@gmail.com>,
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+
+The GPIO sysfs is deprecated and disabled in the defconfig files.
+So in order to motivate the usage of the new GPIO character device API
+add the missing GPIO line names for Raspberry Pi 2 and 3. In the lack
+of full schematics i would leave all undocumented pins as unnamed.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2836-rpi-2-b.dts      | 66 ++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 70 ++++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2837-rpi-3-b.dts      | 70 ++++++++++++++++++++++++++++++
+ 3 files changed, 206 insertions(+)
+
+diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+index 871fc4a..7b4e651 100644
+--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+@@ -28,6 +28,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from rpi_SCH_2b_1p2_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "SDA0",
++			  "SCL0",
++			  "", /* GPIO30 */
++			  "LAN_RUN",
++			  "CAM_GPIO1",
++			  "", /* GPIO33 */
++			  "", /* GPIO34 */
++			  "PWR_LOW_N",
++			  "", /* GPIO36 */
++			  "", /* GPIO37 */
++			  "USB_LIMIT",
++			  "", /* GPIO39 */
++			  "PWM0_OUT",
++			  "CAM_GPIO0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  "ETHCLK",
++			  "PWM1_OUT",
++			  "HDMI_HPD_N",
++			  "STATUS_LED",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
+ 
+ 	/* I2S interface */
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+index d3ec6cd..c6fa34c 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+@@ -52,6 +52,76 @@
+ 	};
+ };
+ 
++&gpio {
++	/*
++	 * Taken from rpi_SCH_3bplus_1p0_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "HDMI_HPD_N",
++			  "STATUS_LED_G",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "PWM0_OUT",
++			  "PWM1_OUT",
++			  "ETHCLK",
++			  "WIFI_CLK",
++			  "SDA0",
++			  "SCL0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++};
++
+ &hdmi {
+ 	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+ };
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+index 31b1c03..ce71f57 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+@@ -47,6 +47,76 @@
+ 	};
+ };
+ 
++&gpio {
++	/*
++	 * Taken from rpi_SCH_3b_1p2_reduced.pdf and
++	 * the official GPU firmware DT blob.
++	 *
++	 * Legend:
++	 * "NC" = not connected (no rail from the SoC)
++	 * "FOO" = GPIO line named "FOO" on the schematic
++	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
++	 */
++	gpio-line-names = "ID_SDA",
++			  "ID_SCL",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "GPIO5",
++			  "GPIO6",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "GPIO12",
++			  "GPIO13",
++			  /* Serial port */
++			  "TXD1",
++			  "RXD1",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "", /* GPIO 28 */
++			  "LAN_RUN_BOOT",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "PWM0_OUT",
++			  "PWM1_OUT",
++			  "ETHCLK",
++			  "WIFI_CLK",
++			  "SDA0",
++			  "SCL0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++};
++
+ &pwm {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
diff --git a/Allwinner-A64-timer-workaround.patch b/Allwinner-A64-timer-workaround.patch
new file mode 100644
index 000000000..4e5c3482d
--- /dev/null
+++ b/Allwinner-A64-timer-workaround.patch
@@ -0,0 +1,527 @@
+From patchwork Sun Jan 13 02:17:18 2019
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+ Sat, 12 Jan 2019 21:17:21 -0500 (EST)
+From: Samuel Holland <samuel@sholland.org>
+To: Catalin Marinas <catalin.marinas@arm.com>,
+ Will Deacon <will.deacon@arm.com>,
+ Maxime Ripard <maxime.ripard@bootlin.com>, Chen-Yu Tsai <wens@csie.org>,
+ Rob Herring <robh+dt@kernel.org>, Mark Rutland <Mark.Rutland@arm.com>,
+ Daniel Lezcano <daniel.lezcano@linaro.org>,
+ Thomas Gleixner <tglx@linutronix.de>, Marc Zyngier <marc.zyngier@arm.com>
+Subject: [PATCH v3 1/2] arm64: arch_timer: Workaround for Allwinner A64 timer
+ instability
+Date: Sat, 12 Jan 2019 20:17:18 -0600
+Message-Id: <20190113021719.46457-2-samuel@sholland.org>
+X-Mailer: git-send-email 2.19.2
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+References: <20190113021719.46457-1-samuel@sholland.org>
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+
+The Allwinner A64 SoC is known[1] to have an unstable architectural
+timer, which manifests itself most obviously in the time jumping forward
+a multiple of 95 years[2][3]. This coincides with 2^56 cycles at a
+timer frequency of 24 MHz, implying that the time went slightly backward
+(and this was interpreted by the kernel as it jumping forward and
+wrapping around past the epoch).
+
+Investigation revealed instability in the low bits of CNTVCT at the
+point a high bit rolls over. This leads to power-of-two cycle forward
+and backward jumps. (Testing shows that forward jumps are about twice as
+likely as backward jumps.) Since the counter value returns to normal
+after an indeterminate read, each "jump" really consists of both a
+forward and backward jump from the software perspective.
+
+Unless the kernel is trapping CNTVCT reads, a userspace program is able
+to read the register in a loop faster than it changes. A test program
+running on all 4 CPU cores that reported jumps larger than 100 ms was
+run for 13.6 hours and reported the following:
+
+ Count | Event
+-------+---------------------------
+  9940 | jumped backward      699ms
+   268 | jumped backward     1398ms
+     1 | jumped backward     2097ms
+ 16020 | jumped forward       175ms
+  6443 | jumped forward       699ms
+  2976 | jumped forward      1398ms
+     9 | jumped forward    356516ms
+     9 | jumped forward    357215ms
+     4 | jumped forward    714430ms
+     1 | jumped forward   3578440ms
+
+This works out to a jump larger than 100 ms about every 5.5 seconds on
+each CPU core.
+
+The largest jump (almost an hour!) was the following sequence of reads:
+    0x0000007fffffffff → 0x00000093feffffff → 0x0000008000000000
+
+Note that the middle bits don't necessarily all read as all zeroes or
+all ones during the anomalous behavior; however the low 10 bits checked
+by the function in this patch have never been observed with any other
+value.
+
+Also note that smaller jumps are much more common, with backward jumps
+of 2048 (2^11) cycles observed over 400 times per second on each core.
+(Of course, this is partially explained by lower bits rolling over more
+frequently.) Any one of these could have caused the 95 year time skip.
+
+Similar anomalies were observed while reading CNTPCT (after patching the
+kernel to allow reads from userspace). However, the CNTPCT jumps are
+much less frequent, and only small jumps were observed. The same program
+as before (except now reading CNTPCT) observed after 72 hours:
+
+ Count | Event
+-------+---------------------------
+    17 | jumped backward      699ms
+    52 | jumped forward       175ms
+  2831 | jumped forward       699ms
+     5 | jumped forward      1398ms
+
+Further investigation showed that the instability in CNTPCT/CNTVCT also
+affected the respective timer's TVAL register. The following values were
+observed immediately after writing CNVT_TVAL to 0x10000000:
+
+ CNTVCT             | CNTV_TVAL  | CNTV_CVAL          | CNTV_TVAL Error
+--------------------+------------+--------------------+-----------------
+ 0x000000d4a2d8bfff | 0x10003fff | 0x000000d4b2d8bfff | +0x00004000
+ 0x000000d4a2d94000 | 0x0fffffff | 0x000000d4b2d97fff | -0x00004000
+ 0x000000d4a2d97fff | 0x10003fff | 0x000000d4b2d97fff | +0x00004000
+ 0x000000d4a2d9c000 | 0x0fffffff | 0x000000d4b2d9ffff | -0x00004000
+
+The pattern of errors in CNTV_TVAL seemed to depend on exactly which
+value was written to it. For example, after writing 0x10101010:
+
+ CNTVCT             | CNTV_TVAL  | CNTV_CVAL          | CNTV_TVAL Error
+--------------------+------------+--------------------+-----------------
+ 0x000001ac3effffff | 0x1110100f | 0x000001ac4f10100f | +0x1000000
+ 0x000001ac40000000 | 0x1010100f | 0x000001ac5110100f | -0x1000000
+ 0x000001ac58ffffff | 0x1110100f | 0x000001ac6910100f | +0x1000000
+ 0x000001ac66000000 | 0x1010100f | 0x000001ac7710100f | -0x1000000
+ 0x000001ac6affffff | 0x1110100f | 0x000001ac7b10100f | +0x1000000
+ 0x000001ac6e000000 | 0x1010100f | 0x000001ac7f10100f | -0x1000000
+
+I was also twice able to reproduce the issue covered by Allwinner's
+workaround[4], that writing to TVAL sometimes fails, and both CVAL and
+TVAL are left with entirely bogus values. One was the following values:
+
+ CNTVCT             | CNTV_TVAL  | CNTV_CVAL
+--------------------+------------+--------------------------------------
+ 0x000000d4a2d6014c | 0x8fbd5721 | 0x000000d132935fff (615s in the past)
+
+========================================================================
+
+Because the CPU can read the CNTPCT/CNTVCT registers faster than they
+change, performing two reads of the register and comparing the high bits
+(like other workarounds) is not a workable solution. And because the
+timer can jump both forward and backward, no pair of reads can
+distinguish a good value from a bad one. The only way to guarantee a
+good value from consecutive reads would be to read _three_ times, and
+take the middle value only if the three values are 1) each unique and
+2) increasing. This takes at minimum 3 counter cycles (125 ns), or more
+if an anomaly is detected.
+
+However, since there is a distinct pattern to the bad values, we can
+optimize the common case (1022/1024 of the time) to a single read by
+simply ignoring values that match the error pattern. This still takes no
+more than 3 cycles in the worst case, and requires much less code. As an
+additional safety check, we still limit the loop iteration to the number
+of max-frequency (1.2 GHz) CPU cycles in three 24 MHz counter periods.
+
+For the TVAL registers, the simple solution is to not use them. Instead,
+read or write the CVAL and calculate the TVAL value in software.
+
+Although the manufacturer is aware of at least part of the erratum[4],
+there is no official name for it. For now, use the kernel-internal name
+"UNKNOWN1".
+
+[1]: https://github.com/armbian/build/commit/a08cd6fe7ae9
+[2]: https://forum.armbian.com/topic/3458-a64-datetime-clock-issue/
+[3]: https://irclog.whitequark.org/linux-sunxi/2018-01-26
+[4]: https://github.com/Allwinner-Homlet/H6-BSP4.9-linux/blob/master/drivers/clocksource/arm_arch_timer.c#L272
+
+Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
+Tested-by: Andre Przywara <andre.przywara@arm.com>
+Signed-off-by: Samuel Holland <samuel@sholland.org>
+---
+ Documentation/arm64/silicon-errata.txt |  2 +
+ drivers/clocksource/Kconfig            | 10 +++++
+ drivers/clocksource/arm_arch_timer.c   | 55 ++++++++++++++++++++++++++
+ 3 files changed, 67 insertions(+)
+
+diff --git a/Documentation/arm64/silicon-errata.txt b/Documentation/arm64/silicon-errata.txt
+index 8f9577621144..4a269732d2a0 100644
+--- a/Documentation/arm64/silicon-errata.txt
++++ b/Documentation/arm64/silicon-errata.txt
+@@ -44,6 +44,8 @@ stable kernels.
+ 
+ | Implementor    | Component       | Erratum ID      | Kconfig                     |
+ +----------------+-----------------+-----------------+-----------------------------+
++| Allwinner      | A64/R18         | UNKNOWN1        | SUN50I_ERRATUM_UNKNOWN1     |
++|                |                 |                 |                             |
+ | ARM            | Cortex-A53      | #826319         | ARM64_ERRATUM_826319        |
+ | ARM            | Cortex-A53      | #827319         | ARM64_ERRATUM_827319        |
+ | ARM            | Cortex-A53      | #824069         | ARM64_ERRATUM_824069        |
+diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
+index 55c77e44bb2d..d20ff4da07c3 100644
+--- a/drivers/clocksource/Kconfig
++++ b/drivers/clocksource/Kconfig
+@@ -364,6 +364,16 @@ config ARM64_ERRATUM_858921
+ 	  The workaround will be dynamically enabled when an affected
+ 	  core is detected.
+ 
++config SUN50I_ERRATUM_UNKNOWN1
++	bool "Workaround for Allwinner A64 erratum UNKNOWN1"
++	default y
++	depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
++	select ARM_ARCH_TIMER_OOL_WORKAROUND
++	help
++	  This option enables a workaround for instability in the timer on
++	  the Allwinner A64 SoC. The workaround will only be active if the
++	  allwinner,erratum-unknown1 property is found in the timer node.
++
+ config ARM_GLOBAL_TIMER
+ 	bool "Support for the ARM global timer" if COMPILE_TEST
+ 	select TIMER_OF if OF
+diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
+index 9a7d4dc00b6e..a8b20b65bd4b 100644
+--- a/drivers/clocksource/arm_arch_timer.c
++++ b/drivers/clocksource/arm_arch_timer.c
+@@ -326,6 +326,48 @@ static u64 notrace arm64_1188873_read_cntvct_el0(void)
+ }
+ #endif
+ 
++#ifdef CONFIG_SUN50I_ERRATUM_UNKNOWN1
++/*
++ * The low bits of the counter registers are indeterminate while bit 10 or
++ * greater is rolling over. Since the counter value can jump both backward
++ * (7ff -> 000 -> 800) and forward (7ff -> fff -> 800), ignore register values
++ * with all ones or all zeros in the low bits. Bound the loop by the maximum
++ * number of CPU cycles in 3 consecutive 24 MHz counter periods.
++ */
++#define __sun50i_a64_read_reg(reg) ({					\
++	u64 _val;							\
++	int _retries = 150;						\
++									\
++	do {								\
++		_val = read_sysreg(reg);				\
++		_retries--;						\
++	} while (((_val + 1) & GENMASK(9, 0)) <= 1 && _retries);	\
++									\
++	WARN_ON_ONCE(!_retries);					\
++	_val;								\
++})
++
++static u64 notrace sun50i_a64_read_cntpct_el0(void)
++{
++	return __sun50i_a64_read_reg(cntpct_el0);
++}
++
++static u64 notrace sun50i_a64_read_cntvct_el0(void)
++{
++	return __sun50i_a64_read_reg(cntvct_el0);
++}
++
++static u32 notrace sun50i_a64_read_cntp_tval_el0(void)
++{
++	return read_sysreg(cntp_cval_el0) - sun50i_a64_read_cntpct_el0();
++}
++
++static u32 notrace sun50i_a64_read_cntv_tval_el0(void)
++{
++	return read_sysreg(cntv_cval_el0) - sun50i_a64_read_cntvct_el0();
++}
++#endif
++
+ #ifdef CONFIG_ARM_ARCH_TIMER_OOL_WORKAROUND
+ DEFINE_PER_CPU(const struct arch_timer_erratum_workaround *, timer_unstable_counter_workaround);
+ EXPORT_SYMBOL_GPL(timer_unstable_counter_workaround);
+@@ -423,6 +465,19 @@ static const struct arch_timer_erratum_workaround ool_workarounds[] = {
+ 		.read_cntvct_el0 = arm64_1188873_read_cntvct_el0,
+ 	},
+ #endif
++#ifdef CONFIG_SUN50I_ERRATUM_UNKNOWN1
++	{
++		.match_type = ate_match_dt,
++		.id = "allwinner,erratum-unknown1",
++		.desc = "Allwinner erratum UNKNOWN1",
++		.read_cntp_tval_el0 = sun50i_a64_read_cntp_tval_el0,
++		.read_cntv_tval_el0 = sun50i_a64_read_cntv_tval_el0,
++		.read_cntpct_el0 = sun50i_a64_read_cntpct_el0,
++		.read_cntvct_el0 = sun50i_a64_read_cntvct_el0,
++		.set_next_event_phys = erratum_set_next_event_tval_phys,
++		.set_next_event_virt = erratum_set_next_event_tval_virt,
++	},
++#endif
+ };
+ 
+ typedef bool (*ate_match_fn_t)(const struct arch_timer_erratum_workaround *,
+
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+ Sat, 12 Jan 2019 21:17:22 -0500 (EST)
+From: Samuel Holland <samuel@sholland.org>
+To: Catalin Marinas <catalin.marinas@arm.com>,
+ Will Deacon <will.deacon@arm.com>,
+ Maxime Ripard <maxime.ripard@bootlin.com>, Chen-Yu Tsai <wens@csie.org>,
+ Rob Herring <robh+dt@kernel.org>, Mark Rutland <Mark.Rutland@arm.com>,
+ Daniel Lezcano <daniel.lezcano@linaro.org>,
+ Thomas Gleixner <tglx@linutronix.de>, Marc Zyngier <marc.zyngier@arm.com>
+Subject: [PATCH v3 2/2] arm64: dts: allwinner: a64: Enable A64 timer
+ workaround
+Date: Sat, 12 Jan 2019 20:17:19 -0600
+Message-Id: <20190113021719.46457-3-samuel@sholland.org>
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+Cc: devicetree@vger.kernel.org, linux-sunxi@googlegroups.com,
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+
+As instability in the architectural timer has been observed on multiple
+devices using this SoC, inluding the Pine64 and the Orange Pi Win,
+enable the workaround in the SoC's device tree.
+
+Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
+Signed-off-by: Samuel Holland <samuel@sholland.org>
+---
+ arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+index f3a66f888205..13eac92a8c55 100644
+--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
++++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+@@ -175,6 +175,7 @@
+ 
+ 	timer {
+ 		compatible = "arm,armv8-timer";
++		allwinner,erratum-unknown1;
+ 		interrupts = <GIC_PPI 13
+ 			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+ 			     <GIC_PPI 14
diff --git a/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch b/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch
new file mode 100644
index 000000000..8cea1b2d3
--- /dev/null
+++ b/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch
@@ -0,0 +1,1104 @@
+From patchwork Sun Nov 11 20:23:53 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 1/7] mmc: bcm2835: reset host on timeout
+Date: Sun, 11 Nov 2018 21:23:53 +0100
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+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
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+From: Michal Suchanek <msuchanek@suse.de>
+
+The bcm2835 mmc host tends to lock up for unknown reason so reset it on
+timeout. The upper mmc block layer tries retransimitting with single
+blocks which tends to work out after a long wait.
+
+This is better than giving up and leaving the machine broken for no
+obvious reason.
+
+Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.")
+Signed-off-by: Michal Suchanek <msuchanek@suse.de>
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index 768972a..f1712df 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -286,6 +286,7 @@ static void bcm2835_reset(struct mmc_host *mmc)
+ 
+ 	if (host->dma_chan)
+ 		dmaengine_terminate_sync(host->dma_chan);
++	host->dma_chan = NULL;
+ 	bcm2835_reset_internal(host);
+ }
+ 
+@@ -837,6 +838,8 @@ static void bcm2835_timeout(struct work_struct *work)
+ 		dev_err(dev, "timeout waiting for hardware interrupt.\n");
+ 		bcm2835_dumpregs(host);
+ 
++		bcm2835_reset(host->mmc);
++
+ 		if (host->data) {
+ 			host->data->error = -ETIMEDOUT;
+ 			bcm2835_finish_data(host);
+
+From patchwork Sun Nov 11 20:23:54 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 2/7] mmc: bcm2835: Recover from MMC_SEND_EXT_CSD
+Date: Sun, 11 Nov 2018 21:23:54 +0100
+Message-Id: <1541967839-2847-3-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
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+From: Phil Elwell <phil@raspberrypi.org>
+
+If the user issues an "mmc extcsd read", the SD controller receives
+what it thinks is a SEND_IF_COND command with an unexpected data block.
+The resulting operations leave the FSM stuck in READWAIT, a state which
+persists until the MMC framework resets the controller, by which point
+the root filesystem is likely to have been unmounted.
+
+A less heavyweight solution is to detect the condition and nudge the
+FSM by asserting the (self-clearing) FORCE_DATA_MODE bit.
+
+Link: https://github.com/raspberrypi/linux/issues/2728
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index f1712df..a251be2 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -773,6 +773,8 @@ static void bcm2835_finish_command(struct bcm2835_host *host)
+ 
+ 		if (!(sdhsts & SDHSTS_CRC7_ERROR) ||
+ 		    (host->cmd->opcode != MMC_SEND_OP_COND)) {
++			u32 edm, fsm;
++
+ 			if (sdhsts & SDHSTS_CMD_TIME_OUT) {
+ 				host->cmd->error = -ETIMEDOUT;
+ 			} else {
+@@ -781,6 +783,13 @@ static void bcm2835_finish_command(struct bcm2835_host *host)
+ 				bcm2835_dumpregs(host);
+ 				host->cmd->error = -EILSEQ;
+ 			}
++			edm = readl(host->ioaddr + SDEDM);
++			fsm = edm & SDEDM_FSM_MASK;
++			if (fsm == SDEDM_FSM_READWAIT ||
++			    fsm == SDEDM_FSM_WRITESTART1)
++				/* Kick the FSM out of its wait */
++				writel(edm | SDEDM_FORCE_DATA_MODE,
++				       host->ioaddr + SDEDM);
+ 			bcm2835_finish_request(host);
+ 			return;
+ 		}
+
+From patchwork Sun Nov 11 20:23:55 2018
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+ id 1Mw9oq-1fWAVX1zBk-00s3Fm; Sun, 11 Nov 2018 21:24:31 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 3/7] mmc: bcm2835: Release DMA channel on driver unload
+Date: Sun, 11 Nov 2018 21:23:55 +0100
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
+ Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
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+We need to release the slave DMA channel during driver unload.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index a251be2..45724ef 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -1457,6 +1457,9 @@ static int bcm2835_remove(struct platform_device *pdev)
+ 	cancel_work_sync(&host->dma_work);
+ 	cancel_delayed_work_sync(&host->timeout_work);
+ 
++	if (host->dma_chan_rxtx)
++		dma_release_channel(host->dma_chan_rxtx);
++
+ 	mmc_free_host(host->mmc);
+ 	platform_set_drvdata(pdev, NULL);
+ 
+
+From patchwork Sun Nov 11 20:23:56 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 4/7] mmc: bcm2835: Avoid possible races on data requests
+Date: Sun, 11 Nov 2018 21:23:56 +0100
+Message-Id: <1541967839-2847-5-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
+ Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
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+
+There are two accesses on the data requests which are not protected by
+the mutex. So fix this accordingly.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index 45724ef..1c60798 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -1064,10 +1064,12 @@ static void bcm2835_dma_complete_work(struct work_struct *work)
+ {
+ 	struct bcm2835_host *host =
+ 		container_of(work, struct bcm2835_host, dma_work);
+-	struct mmc_data *data = host->data;
++	struct mmc_data *data;
+ 
+ 	mutex_lock(&host->mutex);
+ 
++	data = host->data;
++
+ 	if (host->dma_chan) {
+ 		dma_unmap_sg(host->dma_chan->device->dev,
+ 			     data->sg, data->sg_len,
+@@ -1192,9 +1194,6 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
+ 		return;
+ 	}
+ 
+-	if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD))
+-		bcm2835_prepare_dma(host, mrq->data);
+-
+ 	mutex_lock(&host->mutex);
+ 
+ 	WARN_ON(host->mrq);
+@@ -1218,6 +1217,9 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq)
+ 		return;
+ 	}
+ 
++	if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD))
++		bcm2835_prepare_dma(host, mrq->data);
++
+ 	host->use_sbc = !!mrq->sbc && host->mrq->data &&
+ 			(host->mrq->data->flags & MMC_DATA_READ);
+ 	if (host->use_sbc) {
+
+From patchwork Sun Nov 11 20:23:57 2018
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+X-Patchwork-Id: 10677855
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+ id 1MMY9X-1g6LF00fdn-00JXiP; Sun, 11 Nov 2018 21:24:33 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 5/7] mmc: bcm2835: Terminate timeout work synchronously
+Date: Sun, 11 Nov 2018 21:23:57 +0100
+Message-Id: <1541967839-2847-6-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
+ Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
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+It's better to make sure that the timeout work is really terminated
+before calling mmc_request_done.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index 1c60798..2c7589f 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -608,7 +608,7 @@ static void bcm2835_finish_request(struct bcm2835_host *host)
+ 	struct dma_chan *terminate_chan = NULL;
+ 	struct mmc_request *mrq;
+ 
+-	cancel_delayed_work(&host->timeout_work);
++	cancel_delayed_work_sync(&host->timeout_work);
+ 
+ 	mrq = host->mrq;
+ 
+
+From patchwork Sun Nov 11 20:23:58 2018
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+X-Patchwork-Id: 10677853
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+ id 1MvsyF-1fX0UQ3835-00ssSz; Sun, 11 Nov 2018 21:24:33 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 6/7] mmc: bcm2835: Refactor dma_map_sg handling
+Date: Sun, 11 Nov 2018 21:23:58 +0100
+Message-Id: <1541967839-2847-7-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
+ Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
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+
+There are two variables len within bcm2835_prepare_dma. So rename the result
+of dma_map_sg to sg_len. While we are at this add a bail out to simplify the
+following change.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/mmc/host/bcm2835.c | 16 +++++++---------
+ 1 file changed, 7 insertions(+), 9 deletions(-)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index 2c7589f..c42bdaa 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -464,7 +464,7 @@ static void bcm2835_transfer_pio(struct bcm2835_host *host)
+ static
+ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
+ {
+-	int len, dir_data, dir_slave;
++	int sg_len, dir_data, dir_slave;
+ 	struct dma_async_tx_descriptor *desc = NULL;
+ 	struct dma_chan *dma_chan;
+ 
+@@ -510,15 +510,13 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
+ 				     &host->dma_cfg_rx :
+ 				     &host->dma_cfg_tx);
+ 
+-	len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len,
+-			 dir_data);
++	sg_len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len,
++			    dir_data);
++	if (!sg_len)
++		return;
+ 
+-	if (len > 0) {
+-		desc = dmaengine_prep_slave_sg(dma_chan, data->sg,
+-					       len, dir_slave,
+-					       DMA_PREP_INTERRUPT |
+-					       DMA_CTRL_ACK);
+-	}
++	desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave,
++				       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ 
+ 	if (desc) {
+ 		desc->callback = bcm2835_dma_complete;
+
+From patchwork Sun Nov 11 20:23:59 2018
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+X-Patchwork-Id: 10677863
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+ id 1Mw9oq-1fWB8w1OlA-00s3Fm; Sun, 11 Nov 2018 21:24:34 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Florian Fainelli <f.fainelli@gmail.com>,
+ Ulf Hansson <ulf.hansson@linaro.org>
+Subject: [PATCH V2 7/7] mmc: bcm2835: Properly handle dmaengine_prep_slave_sg
+Date: Sun, 11 Nov 2018 21:23:59 +0100
+Message-Id: <1541967839-2847-8-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>,
+ Phil Elwell <phil@raspberrypi.org>,
+ linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
+ Michal Suchanek <msuchanek@suse.de>, linux-arm-kernel@lists.infradead.org
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+In case dmaengine_prep_slave_sg fails we need to call dma_unmap_sg.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+Acked-by: Eric Anholt <eric@anholt.net>
+---
+ drivers/mmc/host/bcm2835.c | 15 +++++++++------
+ 1 file changed, 9 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
+index c42bdaa..82e4b08 100644
+--- a/drivers/mmc/host/bcm2835.c
++++ b/drivers/mmc/host/bcm2835.c
+@@ -518,13 +518,16 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data)
+ 	desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave,
+ 				       DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ 
+-	if (desc) {
+-		desc->callback = bcm2835_dma_complete;
+-		desc->callback_param = host;
+-		host->dma_desc = desc;
+-		host->dma_chan = dma_chan;
+-		host->dma_dir = dir_data;
++	if (!desc) {
++		dma_unmap_sg(dma_chan->device->dev, data->sg, sg_len, dir_data);
++		return;
+ 	}
++
++	desc->callback = bcm2835_dma_complete;
++	desc->callback_param = host;
++	host->dma_desc = desc;
++	host->dma_chan = dma_chan;
++	host->dma_dir = dir_data;
+ }
+ 
+ static void bcm2835_start_dma(struct bcm2835_host *host)
diff --git a/bcm2835-vc04_services-Improve-driver-load-unload.patch b/bcm2835-vc04_services-Improve-driver-load-unload.patch
new file mode 100644
index 000000000..d4deeadec
--- /dev/null
+++ b/bcm2835-vc04_services-Improve-driver-load-unload.patch
@@ -0,0 +1,1761 @@
+From patchwork Thu Oct 25 15:29:25 2018
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+X-Patchwork-Id: 10656067
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 01/11] staging: bcm2835-camera: Abort probe if there is no
+ camera
+Date: Thu, 25 Oct 2018 17:29:25 +0200
+Message-Id: <1540481375-15952-2-git-send-email-stefan.wahren@i2se.com>
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
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+
+Abort the probing of the camera driver in case there isn't a camera
+actually connected to the Raspberry Pi. This solution also avoids a
+NULL ptr dereference of mmal instance on driver unload.
+
+Fixes: 7b3ad5abf027 ("staging: Import the BCM2835 MMAL-based V4L2 camera driver.")
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+index c04bdf0..d6fbef7 100644
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -1841,6 +1841,12 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
+ 	num_cameras = get_num_cameras(instance,
+ 				      resolutions,
+ 				      MAX_BCM2835_CAMERAS);
++
++	if (num_cameras < 1) {
++		ret = -ENODEV;
++		goto cleanup_mmal;
++	}
++
+ 	if (num_cameras > MAX_BCM2835_CAMERAS)
+ 		num_cameras = MAX_BCM2835_CAMERAS;
+ 
+@@ -1940,6 +1946,9 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
+ 	pr_info("%s: error %d while loading driver\n",
+ 		BM2835_MMAL_MODULE_NAME, ret);
+ 
++cleanup_mmal:
++	vchiq_mmal_finalise(instance);
++
+ 	return ret;
+ }
+ 
+
+From patchwork Thu Oct 25 15:29:26 2018
+Content-Type: text/plain; charset="utf-8"
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+X-Patchwork-Id: 10656045
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 02/11] staging: bcm2835-camera: fix module autoloading
+Date: Thu, 25 Oct 2018 17:29:26 +0200
+Message-Id: <1540481375-15952-3-git-send-email-stefan.wahren@i2se.com>
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
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+
+In order to make the module bcm2835-camera load automatically, we need to
+add a module alias.
+
+Fixes: 4bebb0312ea9 ("staging/bcm2835-camera: Set ourselves up as a platform driver.")
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+index d6fbef7..7d3222c 100644
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -47,6 +47,7 @@ MODULE_DESCRIPTION("Broadcom 2835 MMAL video capture");
+ MODULE_AUTHOR("Vincent Sanders");
+ MODULE_LICENSE("GPL");
+ MODULE_VERSION(BM2835_MMAL_VERSION);
++MODULE_ALIAS("platform:bcm2835-camera");
+ 
+ int bcm2835_v4l2_debug;
+ module_param_named(debug, bcm2835_v4l2_debug, int, 0644);
+
+From patchwork Thu Oct 25 15:29:27 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 03/11] staging: bcm2835-camera: Move module info to the
+ end
+Date: Thu, 25 Oct 2018 17:29:27 +0200
+Message-Id: <1540481375-15952-4-git-send-email-stefan.wahren@i2se.com>
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
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+
+In order to have this more consistent between the vc04 services move
+the module information to the end of the file.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ .../staging/vc04_services/bcm2835-camera/bcm2835-camera.c    | 12 ++++++------
+ 1 file changed, 6 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+index 7d3222c..cd773eb 100644
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -43,12 +43,6 @@
+ 
+ #define MAX_BCM2835_CAMERAS 2
+ 
+-MODULE_DESCRIPTION("Broadcom 2835 MMAL video capture");
+-MODULE_AUTHOR("Vincent Sanders");
+-MODULE_LICENSE("GPL");
+-MODULE_VERSION(BM2835_MMAL_VERSION);
+-MODULE_ALIAS("platform:bcm2835-camera");
+-
+ int bcm2835_v4l2_debug;
+ module_param_named(debug, bcm2835_v4l2_debug, int, 0644);
+ MODULE_PARM_DESC(bcm2835_v4l2_debug, "Debug level 0-2");
+@@ -1976,3 +1970,9 @@ static struct platform_driver bcm2835_camera_driver = {
+ };
+ 
+ module_platform_driver(bcm2835_camera_driver)
++
++MODULE_DESCRIPTION("Broadcom 2835 MMAL video capture");
++MODULE_AUTHOR("Vincent Sanders");
++MODULE_LICENSE("GPL");
++MODULE_VERSION(BM2835_MMAL_VERSION);
++MODULE_ALIAS("platform:bcm2835-camera");
+
+From patchwork Thu Oct 25 15:29:28 2018
+Content-Type: text/plain; charset="utf-8"
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 04/11] staging: vchiq_arm: Fix platform device
+ unregistration
+Date: Thu, 25 Oct 2018 17:29:28 +0200
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+In error case platform_device_register_data would return an ERR_PTR
+instead of NULL. So we better check this before unregistration.
+
+Fixes: 37b7b3087a2f ("staging/vc04_services: Register a platform device for the camera driver.")
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+index ea78937..d7d7c2f0 100644
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -3672,7 +3672,8 @@ static int vchiq_probe(struct platform_device *pdev)
+ 
+ static int vchiq_remove(struct platform_device *pdev)
+ {
+-	platform_device_unregister(bcm2835_camera);
++	if (!IS_ERR(bcm2835_camera))
++		platform_device_unregister(bcm2835_camera);
+ 	vchiq_debugfs_deinit();
+ 	device_destroy(vchiq_class, vchiq_devid);
+ 	class_destroy(vchiq_class);
+
+From patchwork Thu Oct 25 15:29:29 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 05/11] staging: vchiq_arm: Fix camera device registration
+Date: Thu, 25 Oct 2018 17:29:29 +0200
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
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+
+Since the camera driver isn't probed via DT, we need to properly setup DMA.
+
+Fixes: 37b7b3087a2f ("staging/vc04_services: Register a platform device for the camera driver.")
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ .../vc04_services/interface/vchiq_arm/vchiq_arm.c    | 20 +++++++++++++++++---
+ 1 file changed, 17 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+index d7d7c2f0..778a252 100644
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -49,6 +49,7 @@
+ #include <linux/of.h>
+ #include <linux/platform_device.h>
+ #include <linux/compat.h>
++#include <linux/dma-mapping.h>
+ #include <soc/bcm2835/raspberrypi-firmware.h>
+ 
+ #include "vchiq_core.h"
+@@ -3588,6 +3589,21 @@ static const struct of_device_id vchiq_of_match[] = {
+ };
+ MODULE_DEVICE_TABLE(of, vchiq_of_match);
+ 
++static struct platform_device *
++vchiq_register_child(struct platform_device *pdev, const char *name)
++{
++	struct platform_device_info pdevinfo;
++
++	memset(&pdevinfo, 0, sizeof(pdevinfo));
++
++	pdevinfo.parent = &pdev->dev;
++	pdevinfo.name = name;
++	pdevinfo.id = PLATFORM_DEVID_NONE;
++	pdevinfo.dma_mask = DMA_BIT_MASK(32);
++
++	return platform_device_register_full(&pdevinfo);
++}
++
+ static int vchiq_probe(struct platform_device *pdev)
+ {
+ 	struct device_node *fw_node;
+@@ -3653,9 +3669,7 @@ static int vchiq_probe(struct platform_device *pdev)
+ 		VCHIQ_VERSION, VCHIQ_VERSION_MIN,
+ 		MAJOR(vchiq_devid), MINOR(vchiq_devid));
+ 
+-	bcm2835_camera = platform_device_register_data(&pdev->dev,
+-						       "bcm2835-camera", -1,
+-						       NULL, 0);
++	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
+ 
+ 	return 0;
+ 
+
+From patchwork Thu Oct 25 15:29:30 2018
+Content-Type: text/plain; charset="utf-8"
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 06/11] staging: vchiq_arm: Register a platform device for
+ audio
+Date: Thu, 25 Oct 2018 17:29:30 +0200
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+
+Following Eric's commit 37b7b3087a2f ("staging/vc04_services: Register a
+platform device for the camera driver.") this register the audio driver as
+a platform device, too.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+index 778a252..fc6388b 100644
+--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
++++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+@@ -170,6 +170,7 @@ static struct class  *vchiq_class;
+ static struct device *vchiq_dev;
+ static DEFINE_SPINLOCK(msg_queue_spinlock);
+ static struct platform_device *bcm2835_camera;
++static struct platform_device *bcm2835_audio;
+ 
+ static struct vchiq_drvdata bcm2835_drvdata = {
+ 	.cache_line_size = 32,
+@@ -3670,6 +3671,7 @@ static int vchiq_probe(struct platform_device *pdev)
+ 		MAJOR(vchiq_devid), MINOR(vchiq_devid));
+ 
+ 	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
++	bcm2835_audio = vchiq_register_child(pdev, "bcm2835_audio");
+ 
+ 	return 0;
+ 
+@@ -3686,6 +3688,8 @@ static int vchiq_probe(struct platform_device *pdev)
+ 
+ static int vchiq_remove(struct platform_device *pdev)
+ {
++	if (!IS_ERR(bcm2835_audio))
++		platform_device_unregister(bcm2835_audio);
+ 	if (!IS_ERR(bcm2835_camera))
+ 		platform_device_unregister(bcm2835_camera);
+ 	vchiq_debugfs_deinit();
+
+From patchwork Thu Oct 25 15:29:31 2018
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+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 07/11] staging: bcm2835-audio: Enable compile test
+Date: Thu, 25 Oct 2018 17:29:31 +0200
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+Enable the compilation test for bcm2835-audio to gain more build coverage.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/bcm2835-audio/Kconfig | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-audio/Kconfig b/drivers/staging/vc04_services/bcm2835-audio/Kconfig
+index 9f53653..62c1c8b 100644
+--- a/drivers/staging/vc04_services/bcm2835-audio/Kconfig
++++ b/drivers/staging/vc04_services/bcm2835-audio/Kconfig
+@@ -1,6 +1,6 @@
+ config SND_BCM2835
+         tristate "BCM2835 Audio"
+-        depends on ARCH_BCM2835 && SND
++        depends on (ARCH_BCM2835 || COMPILE_TEST) && SND
+         select SND_PCM
+         select BCM2835_VCHIQ
+         help
+
+From patchwork Thu Oct 25 15:29:32 2018
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+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 08/11] staging: bcm2835-audio: use
+ module_platform_driver() macro
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
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+
+There is not much value behind this boilerplate, so use
+module_platform_driver() instead.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ .../staging/vc04_services/bcm2835-audio/bcm2835.c    | 20 +-------------------
+ 1 file changed, 1 insertion(+), 19 deletions(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+index 87d56ab..87a27fd 100644
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -356,25 +356,7 @@ static struct platform_driver bcm2835_alsa0_driver = {
+ 		.of_match_table = snd_bcm2835_of_match_table,
+ 	},
+ };
+-
+-static int bcm2835_alsa_device_init(void)
+-{
+-	int retval;
+-
+-	retval = platform_driver_register(&bcm2835_alsa0_driver);
+-	if (retval)
+-		pr_err("Error registering bcm2835_audio driver %d .\n", retval);
+-
+-	return retval;
+-}
+-
+-static void bcm2835_alsa_device_exit(void)
+-{
+-	platform_driver_unregister(&bcm2835_alsa0_driver);
+-}
+-
+-late_initcall(bcm2835_alsa_device_init);
+-module_exit(bcm2835_alsa_device_exit);
++module_platform_driver(bcm2835_alsa0_driver);
+ 
+ MODULE_AUTHOR("Dom Cobley");
+ MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+
+From patchwork Thu Oct 25 15:29:33 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFX 09/11] staging: bcm2835-audio: Drop DT dependency
+Date: Thu, 25 Oct 2018 17:29:33 +0200
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
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+
+Just like the bcm2835-video make this a platform driver which is probed
+by vchiq. In order to change the number of channels use a module
+parameter instead, but use the maximum as default.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ .../staging/vc04_services/bcm2835-audio/bcm2835.c  | 41 ++++++++++------------
+ 1 file changed, 19 insertions(+), 22 deletions(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+index 87a27fd..5c5b600 100644
+--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
++++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+@@ -4,15 +4,17 @@
+ #include <linux/platform_device.h>
+ 
+ #include <linux/init.h>
++#include <linux/dma-mapping.h>
++#include <linux/of_device.h>
+ #include <linux/slab.h>
+ #include <linux/module.h>
+-#include <linux/of.h>
+ 
+ #include "bcm2835.h"
+ 
+ static bool enable_hdmi;
+ static bool enable_headphones;
+ static bool enable_compat_alsa = true;
++static int num_channels = MAX_SUBSTREAMS;
+ 
+ module_param(enable_hdmi, bool, 0444);
+ MODULE_PARM_DESC(enable_hdmi, "Enables HDMI virtual audio device");
+@@ -21,6 +23,8 @@ MODULE_PARM_DESC(enable_headphones, "Enables Headphones virtual audio device");
+ module_param(enable_compat_alsa, bool, 0444);
+ MODULE_PARM_DESC(enable_compat_alsa,
+ 		 "Enables ALSA compatibility virtual audio device");
++module_param(num_channels, int, 0644);
++MODULE_PARM_DESC(num_channels, "Number of audio channels (default: 8)");
+ 
+ static void bcm2835_devm_free_vchi_ctx(struct device *dev, void *res)
+ {
+@@ -293,31 +297,30 @@ static int snd_add_child_devices(struct device *device, u32 numchans)
+ 	return 0;
+ }
+ 
+-static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
++static int snd_bcm2835_alsa_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+-	u32 numchans;
+ 	int err;
+ 
+-	err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
+-				   &numchans);
+-	if (err) {
+-		dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'");
+-		return err;
++	if (num_channels <= 0 || num_channels > MAX_SUBSTREAMS) {
++		num_channels = MAX_SUBSTREAMS;
++		dev_warn(dev, "Illegal num_channels value, will use %u\n",
++			 num_channels);
+ 	}
+ 
+-	if (numchans == 0 || numchans > MAX_SUBSTREAMS) {
+-		numchans = MAX_SUBSTREAMS;
+-		dev_warn(dev,
+-			 "Illegal 'brcm,pwm-channels' value, will use %u\n",
+-			 numchans);
++	dev->coherent_dma_mask = DMA_BIT_MASK(32);
++	dev->dma_mask = &dev->coherent_dma_mask;
++	err = of_dma_configure(dev, NULL, true);
++	if (err) {
++		dev_err(dev, "Unable to setup DMA: %d\n", err);
++		return err;
+ 	}
+ 
+ 	err = bcm2835_devm_add_vchi_ctx(dev);
+ 	if (err)
+ 		return err;
+ 
+-	err = snd_add_child_devices(dev, numchans);
++	err = snd_add_child_devices(dev, num_channels);
+ 	if (err)
+ 		return err;
+ 
+@@ -339,21 +342,14 @@ static int snd_bcm2835_alsa_resume(struct platform_device *pdev)
+ 
+ #endif
+ 
+-static const struct of_device_id snd_bcm2835_of_match_table[] = {
+-	{ .compatible = "brcm,bcm2835-audio",},
+-	{},
+-};
+-MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
+-
+ static struct platform_driver bcm2835_alsa0_driver = {
+-	.probe = snd_bcm2835_alsa_probe_dt,
++	.probe = snd_bcm2835_alsa_probe,
+ #ifdef CONFIG_PM
+ 	.suspend = snd_bcm2835_alsa_suspend,
+ 	.resume = snd_bcm2835_alsa_resume,
+ #endif
+ 	.driver = {
+ 		.name = "bcm2835_audio",
+-		.of_match_table = snd_bcm2835_of_match_table,
+ 	},
+ };
+ module_platform_driver(bcm2835_alsa0_driver);
+@@ -361,3 +357,4 @@ module_platform_driver(bcm2835_alsa0_driver);
+ MODULE_AUTHOR("Dom Cobley");
+ MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+ MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:bcm2835_audio");
+
+From patchwork Thu Oct 25 15:29:34 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 10/11] staging: bcm2835-camera: Provide more specific
+ probe error messages
+Date: Thu, 25 Oct 2018 17:29:34 +0200
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
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+
+Currently there is only a catch-all info message which print the
+relevant error code without any context. So add more specific error
+messages in order to narrow down possible issues.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ .../vc04_services/bcm2835-camera/bcm2835-camera.c  | 58 +++++++++++++++-------
+ 1 file changed, 39 insertions(+), 19 deletions(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+index cd773eb..84ca22d 100644
+--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+@@ -1539,8 +1539,11 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 	struct vchiq_mmal_component  *camera;
+ 
+ 	ret = vchiq_mmal_init(&dev->instance);
+-	if (ret < 0)
++	if (ret < 0) {
++		v4l2_err(&dev->v4l2_dev, "%s: vchiq mmal init failed %d\n",
++			 __func__, ret);
+ 		return ret;
++	}
+ 
+ 	/* get the camera component ready */
+ 	ret = vchiq_mmal_component_init(dev->instance, "ril.camera",
+@@ -1549,7 +1552,9 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 		goto unreg_mmal;
+ 
+ 	camera = dev->component[MMAL_COMPONENT_CAMERA];
+-	if (camera->outputs <  MMAL_CAMERA_PORT_COUNT) {
++	if (camera->outputs < MMAL_CAMERA_PORT_COUNT) {
++		v4l2_err(&dev->v4l2_dev, "%s: too few camera outputs %d needed %d\n",
++			 __func__, camera->outputs, MMAL_CAMERA_PORT_COUNT);
+ 		ret = -EINVAL;
+ 		goto unreg_camera;
+ 	}
+@@ -1557,8 +1562,11 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 	ret = set_camera_parameters(dev->instance,
+ 				    camera,
+ 				    dev);
+-	if (ret < 0)
++	if (ret < 0) {
++		v4l2_err(&dev->v4l2_dev, "%s: unable to set camera parameters: %d\n",
++			 __func__, ret);
+ 		goto unreg_camera;
++	}
+ 
+ 	/* There was an error in the firmware that meant the camera component
+ 	 * produced BGR instead of RGB.
+@@ -1647,8 +1655,8 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 
+ 	if (dev->component[MMAL_COMPONENT_PREVIEW]->inputs < 1) {
+ 		ret = -EINVAL;
+-		pr_debug("too few input ports %d needed %d\n",
+-			 dev->component[MMAL_COMPONENT_PREVIEW]->inputs, 1);
++		v4l2_err(&dev->v4l2_dev, "%s: too few input ports %d needed %d\n",
++			 __func__, dev->component[MMAL_COMPONENT_PREVIEW]->inputs, 1);
+ 		goto unreg_preview;
+ 	}
+ 
+@@ -1661,8 +1669,8 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 
+ 	if (dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs < 1) {
+ 		ret = -EINVAL;
+-		v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n",
+-			 dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs,
++		v4l2_err(&dev->v4l2_dev, "%s: too few input ports %d needed %d\n",
++			 __func__, dev->component[MMAL_COMPONENT_IMAGE_ENCODE]->inputs,
+ 			 1);
+ 		goto unreg_image_encoder;
+ 	}
+@@ -1676,8 +1684,8 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 
+ 	if (dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs < 1) {
+ 		ret = -EINVAL;
+-		v4l2_err(&dev->v4l2_dev, "too few input ports %d needed %d\n",
+-			 dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs,
++		v4l2_err(&dev->v4l2_dev, "%s: too few input ports %d needed %d\n",
++			 __func__, dev->component[MMAL_COMPONENT_VIDEO_ENCODE]->inputs,
+ 			 1);
+ 		goto unreg_vid_encoder;
+ 	}
+@@ -1706,8 +1714,11 @@ static int mmal_init(struct bm2835_mmal_dev *dev)
+ 					      sizeof(enable));
+ 	}
+ 	ret = bm2835_mmal_set_all_camera_controls(dev);
+-	if (ret < 0)
++	if (ret < 0) {
++		v4l2_err(&dev->v4l2_dev, "%s: failed to set all camera controls: %d\n",
++			 __func__, ret);
+ 		goto unreg_vid_encoder;
++	}
+ 
+ 	return 0;
+ 
+@@ -1873,21 +1884,29 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
+ 		snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
+ 			 "%s", BM2835_MMAL_MODULE_NAME);
+ 		ret = v4l2_device_register(NULL, &dev->v4l2_dev);
+-		if (ret)
++		if (ret) {
++			dev_err(&pdev->dev, "%s: could not register V4L2 device: %d\n",
++				__func__, ret);
+ 			goto free_dev;
++		}
+ 
+ 		/* setup v4l controls */
+ 		ret = bm2835_mmal_init_controls(dev, &dev->ctrl_handler);
+-		if (ret < 0)
++		if (ret < 0) {
++			v4l2_err(&dev->v4l2_dev, "%s: could not init controls: %d\n",
++				__func__, ret);
+ 			goto unreg_dev;
++		}
+ 		dev->v4l2_dev.ctrl_handler = &dev->ctrl_handler;
+ 
+ 		/* mmal init */
+ 		dev->instance = instance;
+ 		ret = mmal_init(dev);
+-		if (ret < 0)
++		if (ret < 0) {
++			v4l2_err(&dev->v4l2_dev, "%s: mmal init failed: %d\n",
++				 __func__, ret);
+ 			goto unreg_dev;
+-
++		}
+ 		/* initialize queue */
+ 		q = &dev->capture.vb_vidq;
+ 		memset(q, 0, sizeof(*q));
+@@ -1905,16 +1924,19 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
+ 
+ 		/* initialise video devices */
+ 		ret = bm2835_mmal_init_device(dev, &dev->vdev);
+-		if (ret < 0)
++		if (ret < 0) {
++			v4l2_err(&dev->v4l2_dev, "%s: could not init device: %d\n",
++				 __func__, ret);
+ 			goto unreg_dev;
++		}
+ 
+ 		/* Really want to call vidioc_s_fmt_vid_cap with the default
+ 		 * format, but currently the APIs don't join up.
+ 		 */
+ 		ret = mmal_setup_components(dev, &default_v4l2_format);
+ 		if (ret < 0) {
+-			v4l2_err(&dev->v4l2_dev,
+-				 "%s: could not setup components\n", __func__);
++			v4l2_err(&dev->v4l2_dev, "%s: could not setup components: %d\n",
++				 __func__, ret);
+ 			goto unreg_dev;
+ 		}
+ 
+@@ -1938,8 +1960,6 @@ static int bcm2835_mmal_probe(struct platform_device *pdev)
+ 		bcm2835_cleanup_instance(gdev[i]);
+ 		gdev[i] = NULL;
+ 	}
+-	pr_info("%s: error %d while loading driver\n",
+-		BM2835_MMAL_MODULE_NAME, ret);
+ 
+ cleanup_mmal:
+ 	vchiq_mmal_finalise(instance);
+
+From patchwork Thu Oct 25 15:29:35 2018
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+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, gregkh@linuxfoundation.org,
+ Dave Stevenson <dave.stevenson@raspberrypi.org>
+Subject: [PATCH RFC 11/11] staging: bcm2835-camera: Add hint about possible
+ faulty config
+Date: Thu, 25 Oct 2018 17:29:35 +0200
+Message-Id: <1540481375-15952-12-git-send-email-stefan.wahren@i2se.com>
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+Cc: devel@driverdev.osuosl.org, Stefan Wahren <stefan.wahren@i2se.com>,
+ linux-arm-kernel@lists.infradead.org, tiwai@suse.de, mikebrady@eircom.net,
+ pbrobinson@gmail.com, nsaenzjulienne@suse.de,
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+
+As per default the GPU memory config of the Raspberry Pi isn't sufficient
+for the camera usage. Even worse the bcm2835 camera driver doesn't provide a
+helpful error message in this case. So let's add a hint to point the user
+to the likely cause.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c b/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
+index cc2d993..bffd75d 100644
+--- a/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
++++ b/drivers/staging/vc04_services/bcm2835-camera/mmal-vchiq.c
+@@ -1623,8 +1623,11 @@ int vchiq_mmal_component_init(struct vchiq_mmal_instance *instance,
+ 	component = &instance->component[instance->component_idx];
+ 
+ 	ret = create_component(instance, component, name);
+-	if (ret < 0)
++	if (ret < 0) {
++		pr_err("%s: failed to create component %d (Not enough GPU mem?)\n",
++		       __func__, ret);
+ 		goto unlock;
++	}
+ 
+ 	/* ports info needs gathering */
+ 	component->control.type = MMAL_PORT_TYPE_CONTROL;
diff --git a/bcm2836-Improve-VCHIQ-cache-line-size-handling.patch b/bcm2836-Improve-VCHIQ-cache-line-size-handling.patch
new file mode 100644
index 000000000..8d74fb6e2
--- /dev/null
+++ b/bcm2836-Improve-VCHIQ-cache-line-size-handling.patch
@@ -0,0 +1,630 @@
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+ Mon, 17 Sep 2018 01:22:41 -0700 (PDT)
+From: Phil Elwell <phil@raspberrypi.org>
+To: Rob Herring <robh+dt@kernel.org>, Stefan Wahren <stefan.wahren@i2se.com>,
+ Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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+Subject: [PATCH v3 2/4] dt-bindings: soc: Document "brcm,bcm2836-vchiq"
+Date: Mon, 17 Sep 2018 09:22:22 +0100
+Message-Id: <1537172544-104852-3-git-send-email-phil@raspberrypi.org>
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+
+"brcm,bcm2836-vchiq" should be used on BCM2836 and BCM2837 to ensure
+correct operation.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+---
+ Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
+index 8dd7b3a..f331316 100644
+--- a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
++++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
+@@ -2,7 +2,8 @@ Broadcom VCHIQ firmware services
+ 
+ Required properties:
+ 
+-- compatible:	Should be "brcm,bcm2835-vchiq"
++- compatible:	Should be "brcm,bcm2835-vchiq" on BCM2835, otherwise
++		"brcm,bcm2836-vchiq".
+ - reg:		Physical base address and length of the doorbell register pair
+ - interrupts:	The interrupt number
+ 		  See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
+
+From patchwork Mon Sep 17 08:22:23 2018
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+ Mon, 17 Sep 2018 01:22:42 -0700 (PDT)
+From: Phil Elwell <phil@raspberrypi.org>
+To: Rob Herring <robh+dt@kernel.org>, Stefan Wahren <stefan.wahren@i2se.com>,
+ Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
+ Phil Elwell <phil@raspberrypi.org>, devicetree@vger.kernel.org,
+ linux-rpi-kernel@lists.infradead.org,
+ Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>,
+ linux-arm-kernel@lists.infradead.org,
+ bcm-kernel-feedback-list@broadcom.com, devel@driverdev.osuosl.org
+Subject: [PATCH v3 3/4] ARM: dts: bcm283x: Correct vchiq compatible string
+Date: Mon, 17 Sep 2018 09:22:23 +0100
+Message-Id: <1537172544-104852-4-git-send-email-phil@raspberrypi.org>
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+
+To allow VCHIQ to determine the correct cache line size, use the new
+"brcm,bcm2836-vchiq" compatible string on BCM2836 and BCM2837.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi.dtsi         | 2 +-
+ arch/arm/boot/dts/bcm2836-rpi-2-b.dts      | 2 +-
+ arch/arm/boot/dts/bcm2836-rpi.dtsi         | 6 ++++++
+ arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-3-b.dts      | 2 +-
+ arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi     | 2 +-
+ 6 files changed, 11 insertions(+), 5 deletions(-)
+ create mode 100644 arch/arm/boot/dts/bcm2836-rpi.dtsi
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index cb2d6d7..215d8cc 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -30,7 +30,7 @@
+ 			#power-domain-cells = <1>;
+ 		};
+ 
+-		mailbox@7e00b840 {
++		vchiq: mailbox@7e00b840 {
+ 			compatible = "brcm,bcm2835-vchiq";
+ 			reg = <0x7e00b840 0xf>;
+ 			interrupts = <0 2>;
+diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+index 2fef70a..ac4408b 100644
+--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+@@ -1,7 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2836.dtsi"
+-#include "bcm2835-rpi.dtsi"
++#include "bcm2836-rpi.dtsi"
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ #include "bcm283x-rpi-usb-host.dtsi"
+ 
+diff --git a/arch/arm/boot/dts/bcm2836-rpi.dtsi b/arch/arm/boot/dts/bcm2836-rpi.dtsi
+new file mode 100644
+index 0000000..c4c858b
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2836-rpi.dtsi
+@@ -0,0 +1,6 @@
++// SPDX-License-Identifier: GPL-2.0
++#include "bcm2835-rpi.dtsi"
++
++&vchiq {
++	compatible = "brcm,bcm2836-vchiq", "brcm,bcm2835-vchiq";
++};
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+index 4adb85e..eca36e3 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
+@@ -1,7 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2837.dtsi"
+-#include "bcm2835-rpi.dtsi"
++#include "bcm2836-rpi.dtsi"
+ #include "bcm283x-rpi-lan7515.dtsi"
+ #include "bcm283x-rpi-usb-host.dtsi"
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+index c318bcb..a0ba0f6 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
+@@ -1,7 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2837.dtsi"
+-#include "bcm2835-rpi.dtsi"
++#include "bcm2836-rpi.dtsi"
+ #include "bcm283x-rpi-smsc9514.dtsi"
+ #include "bcm283x-rpi-usb-host.dtsi"
+ 
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+index 7b7ab6a..4a89a18 100644
+--- a/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
++++ b/arch/arm/boot/dts/bcm2837-rpi-cm3.dtsi
+@@ -1,7 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0
+ /dts-v1/;
+ #include "bcm2837.dtsi"
+-#include "bcm2835-rpi.dtsi"
++#include "bcm2836-rpi.dtsi"
+ 
+ / {
+ 	memory {
+
+From patchwork Mon Sep 17 08:22:24 2018
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+ Mon, 17 Sep 2018 01:22:43 -0700 (PDT)
+From: Phil Elwell <phil@raspberrypi.org>
+To: Rob Herring <robh+dt@kernel.org>, Stefan Wahren <stefan.wahren@i2se.com>,
+ Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
+ Phil Elwell <phil@raspberrypi.org>, devicetree@vger.kernel.org,
+ linux-rpi-kernel@lists.infradead.org,
+ Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>,
+ linux-arm-kernel@lists.infradead.org,
+ bcm-kernel-feedback-list@broadcom.com, devel@driverdev.osuosl.org
+Subject: [PATCH v3 4/4] ARM: dts: bcm283x: Correct mailbox register sizes
+Date: Mon, 17 Sep 2018 09:22:24 +0100
+Message-Id: <1537172544-104852-5-git-send-email-phil@raspberrypi.org>
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+The size field in a Device Tree "reg" property is encoded in bytes, not
+words.
+
+Fixes: 614fa22119d6 ("ARM: dts: bcm2835: Add VCHIQ node to the Raspberry Pi boards. (v3)")
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index 215d8cc..29f970f 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -32,7 +32,7 @@
+ 
+ 		vchiq: mailbox@7e00b840 {
+ 			compatible = "brcm,bcm2835-vchiq";
+-			reg = <0x7e00b840 0xf>;
++			reg = <0x7e00b840 0x3c>;
+ 			interrupts = <0 2>;
+ 		};
+ 	};
diff --git a/bcm2837-dts-add-Raspberry-Pi-3-A.patch b/bcm2837-dts-add-Raspberry-Pi-3-A.patch
new file mode 100644
index 000000000..705fca6cb
--- /dev/null
+++ b/bcm2837-dts-add-Raspberry-Pi-3-A.patch
@@ -0,0 +1,511 @@
+From patchwork Tue Dec  4 18:58:17 2018
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
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+X-Patchwork-Submitter: Stefan Wahren <stefan.wahren@i2se.com>
+X-Patchwork-Id: 10712425
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+ id 1MsJXG-1hMU9U03Ja-00tiwe; Tue, 04 Dec 2018 19:58:54 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
+ Arnd Bergmann <arnd@arndb.de>
+Subject: [PATCH V3 1/3] dt-bindings: bcm: Add Raspberry Pi 3 A+
+Date: Tue,  4 Dec 2018 19:58:17 +0100
+Message-Id: <1543949899-13380-2-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
+ bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org,
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+
+This adds the root properties for the Raspberry Pi 3 A+ .
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+Reviewed-by: Rob Herring <robh@kernel.org>
+---
+ Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
+index 0dcc3ea..245328f 100644
+--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
++++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm2835.txt
+@@ -30,6 +30,10 @@ Raspberry Pi 2 Model B
+ Required root node properties:
+ compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
+ 
++Raspberry Pi 3 Model A+
++Required root node properties:
++compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
++
+ Raspberry Pi 3 Model B
+ Required root node properties:
+ compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
+
+From patchwork Tue Dec  4 18:58:18 2018
+Content-Type: text/plain; charset="utf-8"
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+ id 1MTfgb-1gvyxH1xQz-00TyQt; Tue, 04 Dec 2018 19:58:54 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
+ Arnd Bergmann <arnd@arndb.de>
+Subject: [PATCH V3 2/3] ARM: dts: add Raspberry Pi 3 A+
+Date: Tue,  4 Dec 2018 19:58:18 +0100
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
+ bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org,
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+The Raspberry Pi 3 A+ is similar to the Pi 3 B+ but has only 512 MB RAM,
+1 USB 2.0 port and no Ethernet.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+---
+ arch/arm/boot/dts/Makefile                 |   1 +
+ arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts | 107 +++++++++++++++++++++++++++++
+ 2 files changed, 108 insertions(+)
+ create mode 100644 arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+
+diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+index b0e966d..15bbd0d 100644
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -79,6 +79,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
+ 	bcm2835-rpi-a-plus.dtb \
+ 	bcm2835-rpi-cm1-io1.dtb \
+ 	bcm2836-rpi-2-b.dtb \
++	bcm2837-rpi-3-a-plus.dtb \
+ 	bcm2837-rpi-3-b.dtb \
+ 	bcm2837-rpi-3-b-plus.dtb \
+ 	bcm2837-rpi-cm3-io3.dtb \
+diff --git a/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+new file mode 100644
+index 0000000..b2df7cf
+--- /dev/null
++++ b/arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts
+@@ -0,0 +1,107 @@
++// SPDX-License-Identifier: GPL-2.0
++/dts-v1/;
++#include "bcm2837.dtsi"
++#include "bcm2836-rpi.dtsi"
++#include "bcm283x-rpi-usb-host.dtsi"
++
++/ {
++	compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
++	model = "Raspberry Pi 3 Model A+";
++
++	chosen {
++		/* 8250 auxiliary UART instead of pl011 */
++		stdout-path = "serial1:115200n8";
++	};
++
++	memory {
++		reg = <0 0x20000000>;
++	};
++
++	leds {
++		act {
++			gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
++		};
++
++		pwr {
++			label = "PWR";
++			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	wifi_pwrseq: wifi-pwrseq {
++		compatible = "mmc-pwrseq-simple";
++		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
++	};
++};
++
++&firmware {
++	expgpio: gpio {
++		compatible = "raspberrypi,firmware-gpio";
++		gpio-controller;
++		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "STATUS_LED",
++				  "",
++				  "",
++				  "CAM_GPIO0",
++				  "CAM_GPIO1",
++				  "";
++		status = "okay";
++	};
++};
++
++&hdmi {
++	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
++};
++
++&pwm {
++	pinctrl-names = "default";
++	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
++	status = "okay";
++};
++
++/* SDHCI is used to control the SDIO for wireless */
++&sdhci {
++	#address-cells = <1>;
++	#size-cells = <0>;
++	pinctrl-names = "default";
++	pinctrl-0 = <&emmc_gpio34>;
++	status = "okay";
++	bus-width = <4>;
++	non-removable;
++	mmc-pwrseq = <&wifi_pwrseq>;
++
++	brcmf: wifi@1 {
++		reg = <1>;
++		compatible = "brcm,bcm4329-fmac";
++	};
++};
++
++/* SDHOST is used to drive the SD card */
++&sdhost {
++	pinctrl-names = "default";
++	pinctrl-0 = <&sdhost_gpio48>;
++	status = "okay";
++	bus-width = <4>;
++};
++
++/* uart0 communicates with the BT module */
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
++	status = "okay";
++
++	bluetooth {
++		compatible = "brcm,bcm43438-bt";
++		max-speed = <2000000>;
++		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
++	};
++};
++
++/* uart1 is mapped to the pin header */
++&uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_gpio14>;
++	status = "okay";
++};
+
+From patchwork Tue Dec  4 18:58:19 2018
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+ id 1MFJfN-1gjyQ33mR7-00FlVP; Tue, 04 Dec 2018 19:58:55 +0100
+From: Stefan Wahren <stefan.wahren@i2se.com>
+To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
+ Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>,
+ Scott Branden <sbranden@broadcom.com>, Eric Anholt <eric@anholt.net>,
+ Arnd Bergmann <arnd@arndb.de>
+Subject: [PATCH V3 3/3] arm64: dts: broadcom: Add reference to RPi 3 A+
+Date: Tue,  4 Dec 2018 19:58:19 +0100
+Message-Id: <1543949899-13380-4-git-send-email-stefan.wahren@i2se.com>
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+Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
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+
+This adds a reference to the dts of the Raspberry Pi 3 A+,
+so we don't need to maintain the content in arm64.
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+Reviewed-by: Eric Anholt <eric@anholt.net>
+---
+ arch/arm64/boot/dts/broadcom/Makefile                 | 3 ++-
+ arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts | 2 ++
+ 2 files changed, 4 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts
+
+diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
+index 667ca98..d1d31cc 100644
+--- a/arch/arm64/boot/dts/broadcom/Makefile
++++ b/arch/arm64/boot/dts/broadcom/Makefile
+@@ -1,5 +1,6 @@
+ # SPDX-License-Identifier: GPL-2.0
+-dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-b.dtb \
++dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-a-plus.dtb \
++			      bcm2837-rpi-3-b.dtb \
+ 			      bcm2837-rpi-3-b-plus.dtb \
+ 			      bcm2837-rpi-cm3-io3.dtb
+ 
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts
+new file mode 100644
+index 0000000..f0ec56a
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-a-plus.dts
+@@ -0,0 +1,2 @@
++// SPDX-License-Identifier: GPL-2.0
++#include "arm/bcm2837-rpi-3-a-plus.dts"
diff --git a/brcmfmac-Call-brcmf_dmi_probe-before-brcmf_of_probe.patch b/brcmfmac-Call-brcmf_dmi_probe-before-brcmf_of_probe.patch
new file mode 100644
index 000000000..ea3f435fe
--- /dev/null
+++ b/brcmfmac-Call-brcmf_dmi_probe-before-brcmf_of_probe.patch
@@ -0,0 +1,43 @@
+From 554da3868eb1d7174710c18b4ddd6ff01f6d612c Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Fri, 23 Nov 2018 10:11:48 +0100
+Subject: brcmfmac: Call brcmf_dmi_probe before brcmf_of_probe
+
+ARM systems with UEFI may have both devicetree (of) and DMI data in this
+case we end up setting brcmf_mp_device.board_type twice.
+
+In this case we should prefer the devicetree data, because:
+1) The devicerree data is more reliable
+2) Some ARM systems (e.g. the Raspberry Pi 3 models) support both UEFI and
+   classic uboot booting, the devicetree data is always there, so using it
+   makes sure we ask for the same nvram file independent of how we booted.
+
+This commit moves the brcmf_dmi_probe call to before the brcmf_of_probe
+call, so that the latter can override the value of the first if both are
+set.
+
+Fixes: bd1e82bb420a ("brcmfmac: Set board_type from DMI on x86 based ...")
+Cc: Peter Robinson <pbrobinson@gmail.com>
+Tested-and-reported-by: Peter Robinson <pbrobinson@gmail.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+index e738112ed87c..1f1e95a15a17 100644
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+@@ -449,8 +449,8 @@ struct brcmf_mp_device *brcmf_get_module_param(struct device *dev,
+ 	}
+ 	if (!found) {
+ 		/* No platform data for this device, try OF and DMI data */
+-		brcmf_of_probe(dev, bus_type, settings);
+ 		brcmf_dmi_probe(settings, chip, chiprev);
++		brcmf_of_probe(dev, bus_type, settings);
+ 	}
+ 	return settings;
+ }
+-- 
+cgit 1.2-0.3.lf.el7