brcm2708: backport upstream ARM dts commits

This gets us in sync with dts from kernel 4.11. Two patches were already
backported earlier.
I decided to use 03x prefix as it's kind of similar to the 3xx prefix:
3xx - architecture specific patches
It isn't any documented or strict rule though. We don't need to stick to
it if we hit any problems.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 414 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/031-v4.10-0009-ARM-bcm2835-Add-names-for-the-Raspberry-Pi-GPIO-line.patch b/target/linux/brcm2708/patches-4.9/031-v4.10-0009-ARM-bcm2835-Add-names-for-the-Raspberry-Pi-GPIO-line.patch
new file mode 100644
index 0000000000..da6c3b624d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/031-v4.10-0009-ARM-bcm2835-Add-names-for-the-Raspberry-Pi-GPIO-line.patch
@@ -0,0 +1,414 @@
+From 731b26a6ac17f24057c559361c6d0cb7cb79baed Mon Sep 17 00:00:00 2001
+From: Linus Walleij <linus.walleij@linaro.org>
+Date: Thu, 6 Oct 2016 13:15:02 +0200
+Subject: [PATCH] ARM: bcm2835: Add names for the Raspberry Pi GPIO lines
+
+The idea is to give useful names to GPIO lines that an implementer
+will be using from userspace, e.g. for maker type projects.  These are
+user-visible using tools/gpio/lsgpio.c
+
+v2: Major rewrite by anholt: Flatten each GPIO line to a line in the
+    file for better diffing, prefix all expansion header pins with
+    "P<number>" or "P5HEADER_P<number>" and drop the mostly-unused
+    GPIO_GEN<smallnumber> names in favor of GPIO<socgpionumber>, fix
+    extra '[]' on a couple of lines, fix locations of SD_CARD_DETECT,
+    CAM_GPIO and STATUS_LED, fix HDMI_HPD polarities, rewrite A+ using
+    unreleased schematics.
+
+v3: More changes by anholt: Drop P<number> / P5HEADER<number>
+    prefixes.  I had been skeptical about adding them, and was
+    convinced to drop them by Gottfried (who probably has more
+    experience with GPIOs in educational contexts than the rest of
+    us).  Also drop [] brackets for "is pinmuxed", which didn't seem
+    to clarify, and were ambiguous for things like the SPI_*-labeled
+    pins which may or may not actually be pinmuxed to SPI.
+
+v4: Rename B+'s SDA0/SCL0 to match the other boards, despite the
+    naming on its schematic.
+
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+Signed-off-by: Eric Anholt <eric@anholt.net>
+---
+ arch/arm/boot/dts/bcm2835-rpi-a-plus.dts | 65 +++++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2835-rpi-a.dts      | 67 ++++++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2835-rpi-b-plus.dts | 66 +++++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts | 66 +++++++++++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2835-rpi-b.dts      | 67 ++++++++++++++++++++++++++++++++
+ 5 files changed, 331 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a-plus.dts
+@@ -22,6 +22,71 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on the unreleased schematic for the Model A+.
++	 *
++	 * 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 = "SDA0",
++			  "SCL0",
++			  "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",
++			  "NC", /* GPIO30 */
++			  "NC", /* GPIO31 */
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT", /* GPIO45 */
++			  "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 */
+--- a/arch/arm/boot/dts/bcm2835-rpi-a.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-a.dts
+@@ -15,6 +15,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf
++	 * RPI00021 sheet 02
++	 *
++	 * 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 = "SDA0",
++			  "SCL0",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "CAM_CLK",
++			  "LAN_RUN",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "NC", /* GPIO12 */
++			  "NC", /* GPIO13 */
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "STATUS_LED_N",
++			  "GPIO17",
++			  "GPIO18",
++			  "NC", /* GPIO19 */
++			  "NC", /* GPIO20 */
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "NC", /* GPIO26 */
++			  "CAM_GPIO",
++			  /* Binary number representing build/revision */
++			  "CONFIG0",
++			  "CONFIG1",
++			  "CONFIG2",
++			  "CONFIG3",
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "NC", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT",
++			  "HDMI_HPD_P",
++			  "SD_CARD_DET",
++			  /* 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_alt2>;
+ 
+ 	/* I2S interface */
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-plus.dts
+@@ -23,6 +23,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-B-Plus-V1.2-Schematics.pdf
++	 * RPI-BPLUS sheet 1
++	 *
++	 * 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 = "SDA0",
++			  "SCL0",
++			  "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",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN", /* GPIO31 */
++			  "CAM_GPIO1", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "ETHCLK", /* GPIO44 */
++			  "PWM1_OUT", /* GPIO45 */
++			  "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 */
+--- a/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b-rev2.dts
+@@ -16,6 +16,72 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-Rev-2.0-Model-AB-Schematics.pdf
++	 * RPI00022 sheet 02
++	 *
++	 * 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 = "SDA0",
++			  "SCL0",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "CAM_CLK",
++			  "LAN_RUN",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "NC", /* GPIO12 */
++			  "NC", /* GPIO13 */
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "STATUS_LED_N",
++			  "GPIO17",
++			  "GPIO18",
++			  "NC", /* GPIO19 */
++			  "NC", /* GPIO20 */
++			  "CAM_GPIO",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "NC", /* GPIO26 */
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "NC", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT",
++			  "HDMI_HPD_P",
++			  "SD_CARD_DET",
++			  /* 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_alt2>;
+ 
+ 	/* I2S interface */
+--- a/arch/arm/boot/dts/bcm2835-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts
+@@ -16,6 +16,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * Taken from Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf
++	 * RPI00021 sheet 02
++	 *
++	 * 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 = "SDA0",
++			  "SCL0",
++			  "SDA1",
++			  "SCL1",
++			  "GPIO_GCLK",
++			  "CAM_CLK",
++			  "LAN_RUN",
++			  "SPI_CE1_N",
++			  "SPI_CE0_N",
++			  "SPI_MISO",
++			  "SPI_MOSI",
++			  "SPI_SCLK",
++			  "NC", /* GPIO12 */
++			  "NC", /* GPIO13 */
++			  /* Serial port */
++			  "TXD0",
++			  "RXD0",
++			  "STATUS_LED_N",
++			  "GPIO17",
++			  "GPIO18",
++			  "NC", /* GPIO19 */
++			  "NC", /* GPIO20 */
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "NC", /* GPIO26 */
++			  "CAM_GPIO",
++			  /* Binary number representing build/revision */
++			  "CONFIG0",
++			  "CONFIG1",
++			  "CONFIG2",
++			  "CONFIG3",
++			  "NC", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "NC", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "PWM1_OUT",
++			  "HDMI_HPD_P",
++			  "SD_CARD_DET",
++			  /* 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>;
+ };
+