Fixes for Raspberry Pi UARTS (hopefully Bluetooth too) and SD/mmc controllers, and an IRQ controller fix

4 files changed, 252 insertions, 8 deletions

diff --git a/bcm2835-pinctrl-Avoid-warning-from-__irq_do_set_handler.patch b/bcm2835-pinctrl-Avoid-warning-from-__irq_do_set_handler.patch
index d44e5318b..258d3b210 100644
--- a/bcm2835-pinctrl-Avoid-warning-from-__irq_do_set_handler.patch
+++ b/bcm2835-pinctrl-Avoid-warning-from-__irq_do_set_handler.patch
@@ -38,3 +38,33 @@ index 1eb7a1a..2308831 100644
  		/*
  		 * Use the same handler for all groups: this is necessary
  		 * since we use one gpiochip to cover all lines - the
+From 8aa99fe688734f249b07314cdd7c5e25651c9c6d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 27 Oct 2016 16:21:19 +0100
+Subject: irq-bcm2836: Prevent spurious interrupts, and trap them early
+
+The old arch-specific IRQ macros included a dsb to ensure the
+write to clear the mailbox interrupt completed before returning
+from the interrupt. The BCM2836 irqchip driver needs the same
+precaution to avoid spurious interrupts.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/irqchip/irq-bcm2836.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/irqchip/irq-bcm2836.c b/drivers/irqchip/irq-bcm2836.c
+index e7463e3..a8db33b 100644
+--- a/drivers/irqchip/irq-bcm2836.c
++++ b/drivers/irqchip/irq-bcm2836.c
+@@ -175,6 +175,7 @@ __exception_irq_entry bcm2836_arm_irqchip_handle_irq(struct pt_regs *regs)
+ 		u32 ipi = ffs(mbox_val) - 1;
+ 
+ 		writel(1 << ipi, mailbox0);
++		dsb(sy);
+ 		handle_IPI(ipi, regs);
+ #endif
+ 	} else if (stat) {
+-- 
+cgit v0.12
+
diff --git a/bcm2837-sdhost.patch b/bcm2837-sdhost-fixes.patch
index ea6cf1d97..9b81005ad 100644
--- a/bcm2837-sdhost.patch
+++ b/bcm2837-sdhost-fixes.patch
@@ -40,3 +40,44 @@ index c309633..972f14d 100644
 -- 
 cgit v0.12
 
+From 0c1759bc4fc8884d790d4ab99b5276132559b5a1 Mon Sep 17 00:00:00 2001
+From: Gerd Hoffmann <kraxel@redhat.com>
+Date: Tue, 21 Jun 2016 10:00:58 +0200
+Subject: arm: dts: bcm283x: switch from &sdhci to &sdhost
+
+sdcard access with the sdhost controller is faster.
+
+Read access (dd with 64k blocks on rpi2):
+   CONFIG_MMC_SDHCI_IPROC: 11-12 MB/s
+   CONFIG_MMC_BCM2835:     19-20 MB/s
+
+Differences on write access are pretty much in the noise.
+
+Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
+Acked-by: Eric Anholt <eric@anholt.net>
+---
+ 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 8b95832..e36c392 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -65,13 +65,13 @@
+ &sdhci {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&emmc_gpio48>;
+-	status = "okay";
+ 	bus-width = <4>;
+ };
+ 
+ &sdhost {
+ 	pinctrl-names = "default";
+ 	pinctrl-0 = <&sdhost_gpio48>;
++	status = "okay";
+ 	bus-width = <4>;
+ };
+ 
+-- 
+cgit v0.12
+
diff --git a/bcm283x-Define-UART-pinmuxing-on-board-level.patch b/bcm283x-Define-UART-pinmuxing-on-board-level.patch
new file mode 100644
index 000000000..26efe9007
--- /dev/null
+++ b/bcm283x-Define-UART-pinmuxing-on-board-level.patch
@@ -0,0 +1,171 @@
+From patchwork Thu Jul 20 19:37:07 2017
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [1/3] ARM: bcm283x: Define UART pinmuxing on board level
+From: Stefan Wahren <stefan.wahren@i2se.com>
+X-Patchwork-Id: 9855625
+Message-Id: <1500579429-9101-2-git-send-email-stefan.wahren@i2se.com>
+To: Eric Anholt <eric@anholt.net>, Rob Herring <robh+dt@kernel.org>,
+ Mark Rutland <mark.rutland@arm.com>
+Cc: Stefan Wahren <stefan.wahren@i2se.com>, devicetree@vger.kernel.org,
+ Florian Fainelli <f.fainelli@gmail.com>,
+ Scott Branden <sbranden@broadcom.com>, 
+ linux-rpi-kernel@lists.infradead.org,
+ linux-arm-kernel@lists.infradead.org, Gerd Hoffmann <kraxel@redhat.com>
+Date: Thu, 20 Jul 2017 21:37:07 +0200
+
+Until RPI 3 and Zero W the pl011 (uart0) was always on pin 14/15. So in
+order to take care of them and other boards in the future,
+we need to define UART pinmuxing on board level.
+
+This work based on Eric Anholt's patch "ARM: bcm2385: Don't force pl011
+onto pins 14/15." and Fabian Vogt's patch "ARM64: dts: bcm2837: assign
+uart0 to BT and uart1 to pin headers".
+
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+---
+ arch/arm/boot/dts/bcm2835-rpi-a-plus.dts |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi-a.dts      |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi-b-plus.dts |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi-b.dts      |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi-zero.dts   |  6 ++++++
+ arch/arm/boot/dts/bcm2835-rpi.dtsi       |  2 +-
+ arch/arm/boot/dts/bcm2836-rpi-2-b.dts    |  6 ++++++
+ arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts    | 10 ++++++++++
+ 9 files changed, 53 insertions(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+index d070454..9f86649 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+@@ -99,3 +99,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-a.dts b/arch/arm/boot/dts/bcm2835-rpi-a.dts
+index 46d078e..4b1af06 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
+@@ -94,3 +94,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+index 432088e..a846f1e 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+@@ -101,3 +101,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+index 4133bc2..e860964 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+@@ -94,3 +94,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts
+index 4d56fe3..5d77f3f 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
+@@ -89,3 +89,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+index 79a20d5..7036240 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
+@@ -103,3 +103,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+index e55b362..e36c392 100644
+--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
++++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
+@@ -39,7 +39,7 @@
+ 	};
+ 
+ 	alt0: alt0 {
+-		brcm,pins = <4 5 7 8 9 10 11 14 15>;
++		brcm,pins = <4 5 7 8 9 10 11>;
+ 		brcm,function = <BCM2835_FSEL_ALT0>;
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+index bf19e8c..e8de414 100644
+--- a/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2836-rpi-2-b.dts
+@@ -39,3 +39,9 @@
+ &hdmi {
+ 	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+ };
++
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_gpio14>;
++	status = "okay";
++};
+diff --git a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
+index 972f14d..20725ca 100644
+--- a/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
++++ b/arch/arm64/boot/dts/broadcom/bcm2837-rpi-3-b.dts
+@@ -19,7 +19,17 @@
+ 	};
+ };
+ 
++/* uart0 communicates with the BT module */
++&uart0 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart0_ctsrts_gpio30 &gpclk2_gpio43>;
++	status = "okay";
++};
++
++/* uart1 is mapped to the pin header */
+ &uart1 {
++	pinctrl-names = "default";
++	pinctrl-0 = <&uart1_gpio14>;
+ 	status = "okay";
+ };
+ 
diff --git a/kernel.spec b/kernel.spec
index 53b7dabc9..ec69965e6 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -614,20 +614,21 @@ Patch320: bcm283x-vc4-fix-vblank.patch
 # https://patchwork.kernel.org/patch/9802555/
 Patch321: bcm2835-pinctrl-Avoid-warning-from-__irq_do_set_handler.patch
 
-Patch322: bcm2837-sdhost.patch
+Patch322: bcm2835-clk-audio-jitter-issues.patch
+Patch323: bcm2835-fix-potential-null-pointer-dereferences.patch
 
-Patch323: bcm2835-clk-audio-jitter-issues.patch
-Patch324: bcm2835-fix-potential-null-pointer-dereferences.patch
+# http://www.spinics.net/lists/dri-devel/msg132235.html
+Patch324: bcm283x-drm-vc4-Fix-OOPSes-from-trying-to-cache-a-partially-constructed-BO..patch
 
-# http://www.spinics.net/lists/devicetree/msg163238.html
-Patch325: bcm2837-arm32-support.patch
+Patch325: bcm2837-sdhost-fixes.patch
+Patch326: bcm283x-Define-UART-pinmuxing-on-board-level.patch
 
-# http://www.spinics.net/lists/dri-devel/msg132235.html
-Patch326: bcm283x-drm-vc4-Fix-OOPSes-from-trying-to-cache-a-partially-constructed-BO..patch
+# http://www.spinics.net/lists/devicetree/msg163238.html
+Patch329: bcm2837-arm32-support.patch
 
 # This breaks RPi booting with a LPAE kernel, we don't support the DSI ports currently
 # Revert it while I engage upstream to work out what's going on
-Patch327: Revert-ARM-dts-bcm2835-Add-the-DSI-module-nodes-and-.patch
+Patch330: Revert-ARM-dts-bcm2835-Add-the-DSI-module-nodes-and-.patch
 
 # 400 - IBM (ppc/s390x) patches
 
@@ -2241,6 +2242,7 @@ fi
 %changelog
 * Sat Jul 22 2017 Peter Robinson <pbrobinson@fedoraproject.org>
 - Fix bcm2837 SDIO (WiFi)
+- Raspberry Pi fixes (UART, mmc controller)
 
 * Fri Jul 21 2017 Justin M. Forbes <jforbes@fedoraproject.org> - 4.12.3-100
 - Linux v4.12.3