From 3a1689ea752436917c5ce4487527ed6c444630ee Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Wed, 16 Nov 2016 17:52:07 +0000 Subject: [PATCH] ARM: bcm2835: Add names for the RPi Zero GPIO lines This adds the GPIO names for the Raspberry Pi Zero. The GPIO lines of the RPi Zero are almost identical to the Model A+ except: * GPIO 35, 38, 40 and 45 are not connected * Status LED is active low Signed-off-by: Stefan Wahren Signed-off-by: Eric Anholt --- arch/arm/boot/dts/bcm2835-rpi-zero.dts | 65 ++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero.dts b/arch/arm/boot/dts/bcm2835-rpi-zero.dts index 7c1c18048948..cc8b832c4c78 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts @@ -26,6 +26,71 @@ }; &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 = "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 */ + "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"; + pinctrl-0 = <&gpioout &alt0 &i2s_alt0>; /* I2S interface */ -- 2.20.1