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ARM: bcm2835: Add names for the RPi Zero GPIO lines

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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 @@
};
&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 */