arch/arm/boot/dts/overlays/sainsmart18-overlay.dts

   1 /*
   2  * Device Tree overlay for the Sainsmart 1.8" TFT LCD with ST7735R chip 160x128
   3  */
   4
   5 /dts-v1/;
   6 /plugin/;
   7
   8 / {
   9         compatible = "brcm,bcm2835";
  10
  11         fragment@0 {
  12                 target = <&spidev0>;
  13                 __overlay__ {
  14                         status = "disabled";
  15                 };
  16         };
  17
  18         fragment@1 {
  19                 target = <&spi0>;
  20                 __overlay__ {
  21                         /* needed to avoid dtc warning */
  22                         #address-cells = <1>;
  23                         #size-cells = <0>;
  24                         status = "okay";
  25
  26                         ss18: sainsmart18@0 {
  27                                 compatible = "fbtft,sainsmart18";
  28                                 reg = <0>;
  29                                 pinctrl-names = "default";
  30                                 spi-max-frequency = <40000000>;
  31                                 rotate = <90>;
  32                                 buswidth = <8>;
  33                                 fps = <50>;
  34                                 height = <160>;
  35                                 width = <128>;
  36                                 reset-gpios = <&gpio 25 1>;
  37                                 dc-gpios = <&gpio 24 0>;
  38                                 debug = <0>;
  39                         };
  40                 };
  41         };
  42
  43         __overrides__ {
  44                 speed     = <&ss18>,"spi-max-frequency:0";
  45                 rotate    = <&ss18>,"rotate:0";
  46                 fps       = <&ss18>,"fps:0";
  47                 bgr       = <&ss18>,"bgr?";
  48                 debug     = <&ss18>,"debug:0";
  49                 dc_pin    = <&ss18>,"dc-gpios:4";
  50                 reset_pin = <&ss18>,"reset-gpios:4";
  51         };
  52 };