diff options
| author | Stefan Wahren <stefan.wahren@i2se.com> | 2016-11-16 20:52:07 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2016-11-17 00:54:36 +0300 |
| commit | 3a1689ea752436917c5ce4487527ed6c444630ee (patch) | |
| tree | d096bf2fff74ef8c18027c50a4bab35451d86115 /arch/arm/boot/dts | |
| parent | 6b9170887e1b912b657dab4597f8b44ae4dbdf50 (diff) | |
| download | linux-3a1689ea752436917c5ce4487527ed6c444630ee.tar.xz | |
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 <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'arch/arm/boot/dts')
| -rw-r--r-- | arch/arm/boot/dts/bcm2835-rpi-zero.dts | 65 |
1 files changed, 65 insertions, 0 deletions
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 */ |