bbb-gpio-keypad-00A0.dts

   1 /dts-v1/;
   2 /plugin/;
   3
   4 #include <dt-bindings/board/am335x-bbw-bbb-base.h>
   5 #include <dt-bindings/gpio/gpio.h>
   6 #include <dt-bindings/pinctrl/am33xx.h>
   7
   8 / {
   9     compatible = "ti,beaglebone", "ti,beaglebone-black";
  10
  11     /* identification */
  12     part-number = "gpio-keypad-ao2";
  13     version = "00A0";
  14
  15     // resources this cape uses
  16     exclusive-use =
  17       "P8.07",
  18       "P8.08",
  19       "P8.09",
  20       "P8.10";
  21
  22     fragment@0 {
  23         target = <&am33xx_pinmux>;
  24         __overlay__ {
  25             keypad_pins: pinmux_gpio_pins{
  26                 pinctrl-single,pins = <
  27                     BONE_P8_07 (PIN_INPUT_PULLUP | MUX_MODE7)
  28                     BONE_P8_08 (PIN_INPUT_PULLUP | MUX_MODE7)
  29                     BONE_P8_09 (PIN_INPUT_PULLUP | MUX_MODE7)
  30                     BONE_P8_10 (PIN_INPUT_PULLUP | MUX_MODE7)
  31                 >;
  32             };
  33         };
  34     };
  35
  36     fragment@1 {
  37         target-path = "/";
  38         __overlay__ {
  39             gpio_keys {
  40                 compatible = "gpio-keys";
  41                 pinctrl-names = "default";
  42                 pinctrl-0 = <&keypad_pins>;
  43
  44                 up {
  45                     label = "GPIO Key UP";
  46                     linux,code = <103>;
  47                     gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
  48                     debounce_interval = <50>;
  49                 };
  50                 left {
  51                     label = "GPIO Key LEFT";
  52                     linux,code = <105>;
  53                     gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
  54                     debounce_interval = <50>;
  55                 };
  56                 right {
  57                     label = "GPIO Key RIGHT";
  58                     linux,code = <106>;
  59                     gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
  60                     debounce_interval = <50>;
  61                 };
  62                 down {
  63                     label = "GPIO Key DOWN";
  64                     linux,code = <108>;
  65                     gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
  66                     debounce_interval = <50>;
  67                 };
  68             };
  69         };
  70     };
  71 };
  72