arch/arm/boot/dts/overlays/vc4-kms-dpi-hyperpixel.dtsi

   1 /*
   2  * vc4-kms-dpi-hyperpixel4.dtsi
   3  * Commmon initialisation for HyperPixel DPI displays
   4  */
   5
   6 #include <dt-bindings/gpio/gpio.h>
   7 #include <dt-bindings/pinctrl/bcm2835.h>
   8
   9 / {
  10         compatible = "brcm,bcm2835";
  11
  12         fragment@0 {
  13                 target-path = "/";
  14                 __overlay__ {
  15                         spi {
  16                                 compatible = "spi-gpio";
  17                                 #address-cells = <1>;
  18                                 #size-cells = <0>;
  19                                 pinctrl-0 = <&spi_pins>;
  20                                 pinctrl-names = "default";
  21
  22                                 sck-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
  23                                 mosi-gpios = <&gpio 26 GPIO_ACTIVE_HIGH>;
  24                                 cs-gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
  25                                 num-chipselects = <1>;
  26                                 sck-idle-input;
  27
  28                                 panel: display@0 {
  29                                         reg = <0>;
  30                                         /* 100 kHz */
  31                                         spi-max-frequency = <100000>;
  32                                         backlight = <&backlight>;
  33                                         rotation = <0>;
  34
  35                                         port {
  36                                                 panel_in: endpoint {
  37                                                         remote-endpoint = <&dpi_out>;
  38                                                 };
  39                                         };
  40                                 };
  41                         };
  42
  43                         backlight: backlight {
  44                                 compatible = "gpio-backlight";
  45                                 gpios = <&gpio 19 0>;
  46                         };
  47                 };
  48         };
  49
  50         fragment@1 {
  51                 target = <&dpi>;
  52                 __overlay__  {
  53                         status = "okay";
  54
  55                         pinctrl-names = "default";
  56                         pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
  57
  58                         port {
  59                                 dpi_out: endpoint {
  60                                         remote-endpoint = <&panel_in>;
  61                                 };
  62                         };
  63                 };
  64         };
  65
  66         fragment@2 {
  67                 target = <&gpio>;
  68                 __overlay__ {
  69                         spi_pins: hyperpixel4_spi_pins {
  70                                 brcm,pins = <27 18 26>;
  71                                 brcm,pull = <BCM2835_PUD_UP BCM2835_PUD_UP BCM2835_PUD_OFF>;
  72                                 brcm,function = <0>;
  73                         };
  74                 };
  75         };
  76
  77         fragment@3 {
  78                 target-path = "/";
  79                 __overlay__ {
  80                         i2c_gpio: i2c@0 {
  81                                 compatible = "i2c-gpio";
  82                                 gpios = <&gpio 10 0 /* sda */
  83                                          &gpio 11 0>; /* scl */
  84                                 i2c-gpio,delay-us = <4>;        /* ~100 kHz */
  85                                 #address-cells = <1>;
  86                                 #size-cells = <0>;
  87                         };
  88                 };
  89         };
  90
  91         __overrides__ {
  92                 rotate = <&panel>, "rotation:0";
  93         };
  94 };