target/linux/brcm2708/patches-4.9/031-v4.10-0011-ARM-bcm2835-Add-names-for-the-RPi-Zero-GPIO-lines.patch

   1 From 3a1689ea752436917c5ce4487527ed6c444630ee Mon Sep 17 00:00:00 2001
   2 From: Stefan Wahren <stefan.wahren@i2se.com>
   3 Date: Wed, 16 Nov 2016 17:52:07 +0000
   4 Subject: [PATCH] ARM: bcm2835: Add names for the RPi Zero GPIO lines
   5
   6 This adds the GPIO names for the Raspberry Pi Zero. The GPIO lines
   7 of the RPi Zero are almost identical to the Model A+ except:
   8
   9 * GPIO 35, 38, 40 and 45 are not connected
  10 * Status LED is active low
  11
  12 Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
  13 Signed-off-by: Eric Anholt <eric@anholt.net>
  14 ---
  15  arch/arm/boot/dts/bcm2835-rpi-zero.dts | 65 ++++++++++++++++++++++++++++++++++
  16  1 file changed, 65 insertions(+)
  17
  18 --- a/arch/arm/boot/dts/bcm2835-rpi-zero.dts
  19 +++ b/arch/arm/boot/dts/bcm2835-rpi-zero.dts
  20 @@ -26,6 +26,71 @@
  21  };
  22
  23  &gpio {
  24 +       /*
  25 +        * This is based on the official GPU firmware DT blob.
  26 +        *
  27 +        * Legend:
  28 +        * "NC" = not connected (no rail from the SoC)
  29 +        * "FOO" = GPIO line named "FOO" on the schematic
  30 +        * "FOO_N" = GPIO line named "FOO" on schematic, active low
  31 +        */
  32 +       gpio-line-names = "SDA0",
  33 +                         "SCL0",
  34 +                         "SDA1",
  35 +                         "SCL1",
  36 +                         "GPIO_GCLK",
  37 +                         "GPIO5",
  38 +                         "GPIO6",
  39 +                         "SPI_CE1_N",
  40 +                         "SPI_CE0_N",
  41 +                         "SPI_MISO",
  42 +                         "SPI_MOSI",
  43 +                         "SPI_SCLK",
  44 +                         "GPIO12",
  45 +                         "GPIO13",
  46 +                         /* Serial port */
  47 +                         "TXD0",
  48 +                         "RXD0",
  49 +                         "GPIO16",
  50 +                         "GPIO17",
  51 +                         "GPIO18",
  52 +                         "GPIO19",
  53 +                         "GPIO20",
  54 +                         "GPIO21",
  55 +                         "GPIO22",
  56 +                         "GPIO23",
  57 +                         "GPIO24",
  58 +                         "GPIO25",
  59 +                         "GPIO26",
  60 +                         "GPIO27",
  61 +                         "SDA0",
  62 +                         "SCL0",
  63 +                         "NC", /* GPIO30 */
  64 +                         "NC", /* GPIO31 */
  65 +                         "CAM_GPIO1", /* GPIO32 */
  66 +                         "NC", /* GPIO33 */
  67 +                         "NC", /* GPIO34 */
  68 +                         "NC", /* GPIO35 */
  69 +                         "NC", /* GPIO36 */
  70 +                         "NC", /* GPIO37 */
  71 +                         "NC", /* GPIO38 */
  72 +                         "NC", /* GPIO39 */
  73 +                         "NC", /* GPIO40 */
  74 +                         "CAM_GPIO0", /* GPIO41 */
  75 +                         "NC", /* GPIO42 */
  76 +                         "NC", /* GPIO43 */
  77 +                         "NC", /* GPIO44 */
  78 +                         "NC", /* GPIO45 */
  79 +                         "HDMI_HPD_N",
  80 +                         "STATUS_LED_N",
  81 +                         /* Used by SD Card */
  82 +                         "SD_CLK_R",
  83 +                         "SD_CMD_R",
  84 +                         "SD_DATA0_R",
  85 +                         "SD_DATA1_R",
  86 +                         "SD_DATA2_R",
  87 +                         "SD_DATA3_R";
  88 +
  89         pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
  90
  91         /* I2S interface */