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authorStefan Wahren <stefan.wahren@i2se.com>2016-11-16 20:52:07 +0300
committerEric Anholt <eric@anholt.net>2016-11-17 00:54:36 +0300
commit3a1689ea752436917c5ce4487527ed6c444630ee (patch)
treed096bf2fff74ef8c18027c50a4bab35451d86115 /arch/arm/boot/dts/bcm2835-rpi-zero.dts
parent6b9170887e1b912b657dab4597f8b44ae4dbdf50 (diff)
downloadlinux-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/bcm2835-rpi-zero.dts')
-rw-r--r--arch/arm/boot/dts/bcm2835-rpi-zero.dts65
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 */