arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts

   1 /*
   2  * Device Tree overlay for Adafruit PiTFT 2.8" capacitive touch screen
   3  *
   4  */
   5
   6 /dts-v1/;
   7 /plugin/;
   8
   9 / {
  10         compatible = "brcm,bcm2835";
  11
  12         fragment@0 {
  13                 target = <&spi0>;
  14                 __overlay__ {
  15                         status = "okay";
  16                 };
  17         };
  18
  19         fragment@1 {
  20                 target = <&spidev0>;
  21                 __overlay__ {
  22                         status = "disabled";
  23                 };
  24         };
  25
  26         fragment@2 {
  27                 target = <&gpio>;
  28                 __overlay__ {
  29                         pitft_pins: pitft_pins {
  30                                 brcm,pins = <24 25>;
  31                                 brcm,function = <0 1>; /* in out */
  32                                 brcm,pull = <2 0>; /* pullup none */
  33                         };
  34                 };
  35         };
  36
  37         fragment@3 {
  38                 target = <&spi0>;
  39                 __overlay__ {
  40                         /* needed to avoid dtc warning */
  41                         #address-cells = <1>;
  42                         #size-cells = <0>;
  43
  44                         pitft: pitft@0{
  45                                 compatible = "ilitek,ili9340";
  46                                 reg = <0>;
  47                                 pinctrl-names = "default";
  48                                 pinctrl-0 = <&pitft_pins>;
  49
  50                                 spi-max-frequency = <32000000>;
  51                                 rotate = <90>;
  52                                 fps = <25>;
  53                                 bgr;
  54                                 buswidth = <8>;
  55                                 dc-gpios = <&gpio 25 0>;
  56                                 debug = <0>;
  57                         };
  58                 };
  59         };
  60
  61         fragment@4 {
  62                 target = <&i2c1>;
  63                 __overlay__ {
  64                         /* needed to avoid dtc warning */
  65                         #address-cells = <1>;
  66                         #size-cells = <0>;
  67
  68                         ft6236: ft6236@38 {
  69                                 compatible = "focaltech,ft6236";
  70                                 reg = <0x38>;
  71
  72                                 interrupt-parent = <&gpio>;
  73                                 interrupts = <24 2>;
  74                                 touchscreen-size-x = <240>;
  75                                 touchscreen-size-y = <320>;
  76                         };
  77                 };
  78         };
  79
  80         __overrides__ {
  81                 speed =   <&pitft>,"spi-max-frequency:0";
  82                 rotate =  <&pitft>,"rotate:0";
  83                 fps =     <&pitft>,"fps:0";
  84                 debug =   <&pitft>,"debug:0";
  85                 touch-sizex = <&ft6236>,"touchscreen-size-x?";
  86                 touch-sizey = <&ft6236>,"touchscreen-size-y?";
  87                 touch-invx  = <&ft6236>,"touchscreen-inverted-x?";
  88                 touch-invy  = <&ft6236>,"touchscreen-inverted-y?";
  89                 touch-swapxy = <&ft6236>,"touchscreen-swapped-x-y?";
  90         };
  91 };