bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 974 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch b/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch
new file mode 100644
index 0000000000..6177eca57a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0743-ARM-dts-Add-GPIO-line-names-for-downstream-RPis.patch
@@ -0,0 +1,974 @@
+From c4276e76a720c00d5115bc38d9834480552bcdbe Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Sun, 20 Feb 2022 16:27:11 +0000
+Subject: [PATCH] ARM: dts: Add GPIO line names for downstream RPis
+
+Largely copied from the upstream dts files, with a few additions and
+tweaks.
+
+See: https://github.com/raspberrypi/linux/issues/2760
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2708-rpi-b-plus.dts   | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts   | 67 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-b.dts        | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-cm.dts       | 65 ++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-zero-w.dts   | 67 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2708-rpi-zero.dts     | 65 ++++++++++++++++++
+ arch/arm/boot/dts/bcm2709-rpi-2-b.dts      | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-2-b.dts      | 66 +++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts | 76 ++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-3-b.dts      | 76 ++++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-cm3.dts      | 72 ++++++++++++++++++++
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 67 +++++++++++++++++++
+ 12 files changed, 819 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &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 = "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",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN", /* GPIO31 */
++			  "CAM_GPIO1", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "ETH_CLK", /* 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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b-rev1.dts
+@@ -11,6 +11,73 @@
+ };
+ 
+ &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_GPIO1",
++			  "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_GPIO0",
++			  /* 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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &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_GPIO1",
++			  "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_GPIO0",
++			  "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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
+@@ -24,6 +24,71 @@ cam0_reg: &cam0_regulator {
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on 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 = "GPIO0",
++			  "GPIO1",
++			  "GPIO2",
++			  "GPIO3",
++			  "GPIO4",
++			  "GPIO5",
++			  "GPIO6",
++			  "GPIO7",
++			  "GPIO8",
++			  "GPIO9",
++			  "GPIO10",
++			  "GPIO11",
++			  "GPIO12",
++			  "GPIO13",
++			  "GPIO14",
++			  "GPIO15",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "GPIO32",
++			  "GPIO33",
++			  "GPIO34",
++			  "GPIO35",
++			  "GPIO36",
++			  "GPIO37",
++			  "GPIO38",
++			  "GPIO39",
++			  "GPIO40",
++			  "GPIO41",
++			  "GPIO42",
++			  "GPIO43",
++			  "GPIO44",
++			  "GPIO45",
++			  "HDMI_HPD_N",
++			  /* Also used as ACT LED */
++			  "EMMC_EN_N",
++			  /* Used by eMMC */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero-w.dts
+@@ -22,6 +22,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on 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",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "CAM_GPIO1", /* GPIO40 */
++			  "WL_ON", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "WIFI_CLK", /* GPIO43 */
++			  "CAM_GPIO0", /* GPIO44 */
++			  "BT_ON", /* GPIO45 */
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2708-rpi-zero.dts
++++ b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
+@@ -15,6 +15,71 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on 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",
++			  "NC", /* GPIO30 */
++			  "NC", /* GPIO31 */
++			  "CAM_GPIO1", /* GPIO32 */
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "NC", /* GPIO35 */
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "NC", /* GPIO38 */
++			  "NC", /* GPIO39 */
++			  "NC", /* GPIO40 */
++			  "CAM_GPIO0", /* GPIO41 */
++			  "NC", /* GPIO42 */
++			  "NC", /* GPIO43 */
++			  "NC", /* GPIO44 */
++			  "NC", /* GPIO45 */
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &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",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN",
++			  "CAM_GPIO1",
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N",
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT",
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "CAM_GPIO0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  "ETH_CLK",
++			  "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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-2-b.dts
+@@ -12,6 +12,72 @@
+ };
+ 
+ &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",
++			  "NC", /* GPIO30 */
++			  "LAN_RUN",
++			  "CAM_GPIO1",
++			  "NC", /* GPIO33 */
++			  "NC", /* GPIO34 */
++			  "PWR_LOW_N",
++			  "NC", /* GPIO36 */
++			  "NC", /* GPIO37 */
++			  "USB_LIMIT",
++			  "NC", /* GPIO39 */
++			  "PWM0_OUT",
++			  "CAM_GPIO0",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  "ETH_CLK",
++			  "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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
+@@ -23,6 +23,74 @@
+ };
+ 
+ &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",
++			  "ETH_CLK",
++			  "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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -97,6 +165,14 @@
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "PWR_LED_R",
++				  "LAN_RUN",
++				  "NC",
++				  "CAM_GPIO0",
++				  "CAM_GPIO1",
++				  "NC";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
+@@ -23,6 +23,74 @@
+ };
+ 
+ &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",
++			  "NC", /* 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",
++			  "ETH_CLK",
++			  "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";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -108,6 +176,14 @@
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "BT_ON",
++				  "WL_ON",
++				  "STATUS_LED",
++				  "LAN_RUN",
++				  "HDMI_HPD_N",
++				  "CAM_GPIO0",
++				  "CAM_GPIO1",
++				  "PWR_LOW_N";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
+@@ -24,6 +24,70 @@ cam0_reg: &cam0_regulator {
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on 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 = "GPIO0",
++			  "GPIO1",
++			  "GPIO2",
++			  "GPIO3",
++			  "GPIO4",
++			  "GPIO5",
++			  "GPIO6",
++			  "GPIO7",
++			  "GPIO8",
++			  "GPIO9",
++			  "GPIO10",
++			  "GPIO11",
++			  "GPIO12",
++			  "GPIO13",
++			  "GPIO14",
++			  "GPIO15",
++			  "GPIO16",
++			  "GPIO17",
++			  "GPIO18",
++			  "GPIO19",
++			  "GPIO20",
++			  "GPIO21",
++			  "GPIO22",
++			  "GPIO23",
++			  "GPIO24",
++			  "GPIO25",
++			  "GPIO26",
++			  "GPIO27",
++			  "GPIO28",
++			  "GPIO29",
++			  "GPIO30",
++			  "GPIO31",
++			  "GPIO32",
++			  "GPIO33",
++			  "GPIO34",
++			  "GPIO35",
++			  "GPIO36",
++			  "GPIO37",
++			  "GPIO38",
++			  "GPIO39",
++			  "GPIO40",
++			  "GPIO41",
++			  "GPIO42",
++			  "GPIO43",
++			  "GPIO44",
++			  "GPIO45",
++			  "SMPS_SCL",
++			  "SMPS_SDA",
++			  /* Used by eMMC */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */
+@@ -71,6 +135,14 @@ cam0_reg: &cam0_regulator {
+ 		compatible = "raspberrypi,firmware-gpio";
+ 		gpio-controller;
+ 		#gpio-cells = <2>;
++		gpio-line-names = "HDMI_HPD_N",
++				  "EMMC_EN_N",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC",
++				  "NC";
+ 		status = "okay";
+ 	};
+ };
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -22,6 +22,73 @@
+ };
+ 
+ &gpio {
++	/*
++	 * This is based on 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",
++			  "HDMI_HPD_N",
++			  "STATUS_LED_N",
++			  /* Used by BT module */
++			  "CTS0",
++			  "RTS0",
++			  "TXD0",
++			  "RXD0",
++			  /* Used by Wifi */
++			  "SD1_CLK",
++			  "SD1_CMD",
++			  "SD1_DATA0",
++			  "SD1_DATA1",
++			  "SD1_DATA2",
++			  "SD1_DATA3",
++			  "CAM_GPIO1", /* GPIO40 */
++			  "WL_ON", /* GPIO41 */
++			  "BT_ON", /* GPIO42 */
++			  "WIFI_CLK", /* GPIO43 */
++			  "SDA0", /* GPIO44 */
++			  "SCL0", /* GPIO45 */
++			  "SMPS_SCL", /* GPIO46 */
++			  "SMPS_SDA", /* GPIO47 */
++			  /* Used by SD Card */
++			  "SD_CLK_R",
++			  "SD_CMD_R",
++			  "SD_DATA0_R",
++			  "SD_DATA1_R",
++			  "SD_DATA2_R",
++			  "SD_DATA3_R";
++
+ 	spi0_pins: spi0_pins {
+ 		brcm,pins = <9 10 11>;
+ 		brcm,function = <4>; /* alt0 */