target/linux/brcm2708/patches-4.19/950-0515-BCM270X_DT-Create-bcm2708-rpi-zero.dts.patch

   1 From 926eb05f48f4c805075aa535a444127de6de0dbb Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Tue, 28 May 2019 16:23:51 +0100
   4 Subject: [PATCH 515/703] BCM270X_DT: Create bcm2708-rpi-zero.dts
   5
   6 The Pi Zero deserves a dedicated .dtb file - sharing the b-plus .dtb
   7 has been observed to cause an issue with the MAC address of some
   8 Ethernet dongles.
   9
  10 See: https://github.com/raspberrypi/linux/issues/2990
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  13 ---
  14  arch/arm/boot/dts/Makefile             |   1 +
  15  arch/arm/boot/dts/bcm2708-rpi-zero.dts | 117 +++++++++++++++++++++++++
  16  2 files changed, 118 insertions(+)
  17  create mode 100644 arch/arm/boot/dts/bcm2708-rpi-zero.dts
  18
  19 --- a/arch/arm/boot/dts/Makefile
  20 +++ b/arch/arm/boot/dts/Makefile
  21 @@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
  22         bcm2708-rpi-b.dtb \
  23         bcm2708-rpi-b-plus.dtb \
  24         bcm2708-rpi-cm.dtb \
  25 +       bcm2708-rpi-zero.dtb \
  26         bcm2708-rpi-zero-w.dtb \
  27         bcm2709-rpi-2-b.dtb \
  28         bcm2710-rpi-3-b.dtb \
  29 --- /dev/null
  30 +++ b/arch/arm/boot/dts/bcm2708-rpi-zero.dts
  31 @@ -0,0 +1,117 @@
  32 +/dts-v1/;
  33 +
  34 +#include "bcm2708.dtsi"
  35 +#include "bcm283x-rpi-csi1-2lane.dtsi"
  36 +
  37 +/ {
  38 +       compatible = "raspberrypi,model-zero", "brcm,bcm2835";
  39 +       model = "Raspberry Pi Zero";
  40 +
  41 +       chosen {
  42 +               bootargs = "coherent_pool=1M";
  43 +       };
  44 +};
  45 +
  46 +&gpio {
  47 +       spi0_pins: spi0_pins {
  48 +               brcm,pins = <9 10 11>;
  49 +               brcm,function = <4>; /* alt0 */
  50 +       };
  51 +
  52 +       spi0_cs_pins: spi0_cs_pins {
  53 +               brcm,pins = <8 7>;
  54 +               brcm,function = <1>; /* output */
  55 +       };
  56 +
  57 +       i2c0_pins: i2c0 {
  58 +               brcm,pins = <0 1>;
  59 +               brcm,function = <4>;
  60 +       };
  61 +
  62 +       i2c1_pins: i2c1 {
  63 +               brcm,pins = <2 3>;
  64 +               brcm,function = <4>;
  65 +       };
  66 +
  67 +       i2s_pins: i2s {
  68 +               brcm,pins = <18 19 20 21>;
  69 +               brcm,function = <4>; /* alt0 */
  70 +       };
  71 +
  72 +       audio_pins: audio_pins {
  73 +               brcm,pins = <>;
  74 +               brcm,function = <>;
  75 +       };
  76 +};
  77 +
  78 +&uart0 {
  79 +       status = "okay";
  80 +};
  81 +
  82 +&spi0 {
  83 +       pinctrl-names = "default";
  84 +       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
  85 +       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
  86 +
  87 +       spidev0: spidev@0{
  88 +               compatible = "spidev";
  89 +               reg = <0>;      /* CE0 */
  90 +               #address-cells = <1>;
  91 +               #size-cells = <0>;
  92 +               spi-max-frequency = <125000000>;
  93 +       };
  94 +
  95 +       spidev1: spidev@1{
  96 +               compatible = "spidev";
  97 +               reg = <1>;      /* CE1 */
  98 +               #address-cells = <1>;
  99 +               #size-cells = <0>;
 100 +               spi-max-frequency = <125000000>;
 101 +       };
 102 +};
 103 +
 104 +&i2c0 {
 105 +       pinctrl-names = "default";
 106 +       pinctrl-0 = <&i2c0_pins>;
 107 +       clock-frequency = <100000>;
 108 +};
 109 +
 110 +&i2c1 {
 111 +       pinctrl-names = "default";
 112 +       pinctrl-0 = <&i2c1_pins>;
 113 +       clock-frequency = <100000>;
 114 +};
 115 +
 116 +&i2c2 {
 117 +       clock-frequency = <100000>;
 118 +};
 119 +
 120 +&i2s {
 121 +       pinctrl-names = "default";
 122 +       pinctrl-0 = <&i2s_pins>;
 123 +};
 124 +
 125 +&leds {
 126 +       act_led: act {
 127 +               label = "led0";
 128 +               linux,default-trigger = "mmc0";
 129 +               gpios = <&gpio 47 0>;
 130 +       };
 131 +};
 132 +
 133 +&hdmi {
 134 +       hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
 135 +};
 136 +
 137 +&audio {
 138 +       pinctrl-names = "default";
 139 +       pinctrl-0 = <&audio_pins>;
 140 +};
 141 +
 142 +/ {
 143 +       __overrides__ {
 144 +               act_led_gpio = <&act_led>,"gpios:4";
 145 +               act_led_activelow = <&act_led>,"gpios:8";
 146 +               act_led_trigger = <&act_led>,"linux,default-trigger";
 147 +       };
 148 +};