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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>
This commit is contained in:
Stefan Wahren 2016-11-16 17:52:07 +00:00 committed by Eric Anholt
parent 6b9170887e
commit 3a1689ea75
1 changed files with 65 additions and 0 deletions
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65
arch/arm/boot/dts/bcm2835-rpi-zero.dts
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@ -26,6 +26,71 @@ act {
};
&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 */