On Sat, Jan 12, 2019 at 12:44 PM Stefan Wahren <stefan.wahren@xxxxxxxx> wrote:
>
> 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@xxxxxxxx>
Tested-by: Peter Robinson <pbrobinson@xxxxxxxxx>
Tested on RPi2/3/3B+ using lsgpio
> ---
> 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>;
> --
> 2.7.4
>
