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authorPeter Robinson <pbrobinson@gmail.com>2019-01-13 04:44:19 +0000
committerPeter Robinson <pbrobinson@gmail.com>2019-01-13 04:44:19 +0000
commit60a8ce36abae7191c0e71034eb29f7afb274310e (patch)
treee9346d6d6b3c03d8d7198bed306973583330ae09 /ARM-dts-bcm283x-Several-DTS-improvements.patch
parent89735063a045bd0ca71e47990a5f5468e3406cbe (diff)
downloadkernel-60a8ce36abae7191c0e71034eb29f7afb274310e.tar.gz
kernel-60a8ce36abae7191c0e71034eb29f7afb274310e.tar.xz
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Raspberry Pi DT updates, Update AllWinner A64 timer errata workaround
Diffstat (limited to 'ARM-dts-bcm283x-Several-DTS-improvements.patch')
-rw-r--r--ARM-dts-bcm283x-Several-DTS-improvements.patch1130
1 files changed, 1130 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 @@
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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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+Subject: [PATCH 2/6] ARM: dts: bcm2835-rpi: Drop unnecessary
+ #address-cells/#size-cells
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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 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>,
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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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+ id 1N94qX-1hN3Sw2Ced-0165Go; 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 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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+ 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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+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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+X-Patchwork-Id: 10760941
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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
+Content-Type: text/plain; charset="utf-8"
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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 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>;