On Mon, 2020-01-27 at 19:15 +0100, Stefan Wahren wrote:
> This adds the labels for all the SoC GPIOs on the Raspberry Pi 4.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
> ---
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 74
> +++++++++++++++++++++++++++++++++++
>  1 file changed, 74 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> index 1b5a835..6607e2e 100644
> --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
> @@ -71,6 +71,80 @@
>  	};
>  };
>  
> +&gpio {
> +	/*
> +	 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
> +	 * the official GPU firmware DT blob.
> +	 *
> +	 * Legend:
> +	 * "NC" = not connected (no rail from the SoC)

May be drop this from the legend, as it's not used.

> +	 * "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",
> +			  "RGMII_MDIO",
> +			  "RGMIO_MDC",
> +			  /* Used by BT module */
> +			  "CTS0",
> +			  "RTS0",
> +			  "TXD0",
> +			  "RXD0",
> +			  /* Used by Wifi */
> +			  "SD1_CLK",
> +			  "SD1_CMD",
> +			  "SD1_DATA0",
> +			  "SD1_DATA1",
> +			  "SD1_DATA2",
> +			  "SD1_DATA3",
> +			  /* Shared with SPI flash */
> +			  "PWM0_MISO",
> +			  "PWM1_MOSI",
> +			  "STATUS_LED_G_CLK",
> +			  "SPIFLASH_CE_N",
> +			  "SDA0",
> +			  "SCL0",
> +			  "RGMII_RXCLK",
> +			  "RGMII_RXCTL",
> +			  "RGMII_RXD0",
> +			  "RGMII_RXD1",
> +			  "RGMII_RXD2",
> +			  "RGMII_RXD3",
> +			  "RGMII_TXCLK",
> +			  "RGMII_TXCTL",
> +			  "RGMII_TXD0",
> +			  "RGMII_TXD1",
> +			  "RGMII_TXD2",
> +			  "RGMII_TXD3";
> +};
> +
>  &pwm1 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;