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       "P8.26",
  22       "P9.15";
  23
  24     fragment@0 {
  25         target = <&am33xx_pinmux>;
  26         __overlay__ {
  27             keypad_pins: pinmux_gpio_pins{
  28                 pinctrl-single,pins = <
  29                     BONE_P8_07 (PIN_INPUT_PULLUP | MUX_MODE7)
  30                     BONE_P8_08 (PIN_INPUT_PULLUP | MUX_MODE7)
  31                     BONE_P8_09 (PIN_INPUT_PULLUP | MUX_MODE7)
  32                     BONE_P8_10 (PIN_INPUT_PULLUP | MUX_MODE7)
  33                     BONE_P8_26 (PIN_INPUT_PULLUP | MUX_MODE7)
  34                     BONE_P9_15 (PIN_INPUT_PULLUP | MUX_MODE7)
  35                 >;
  36             };
  37         };
  38     };
  39
  40     fragment@1 {
  41         target-path = "/";
  42         __overlay__ {
  43             gpio_keys {
  44                 compatible = "gpio-keys";
  45                 autorepeat;
  46                 pinctrl-names = "default";
  47                 pinctrl-0 = <&keypad_pins>;
  48
  49                 up {
  50                     label = "GPIO Key UP";
  51                     linux,code = <103>;
  52                     gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
  53                     debounce_interval = <50>;
  54                 };
  55                 left {
  56                     label = "GPIO Key LEFT";
  57                     linux,code = <105>;
  58                     gpios = <&gpio2 3 GPIO_ACTIVE_LOW>;
  59                     debounce_interval = <50>;
  60                 };
  61                 right {
  62                     label = "GPIO Key RIGHT";
  63                     linux,code = <106>;
  64                     gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
  65                     debounce_interval = <50>;
  66                 };
  67                 down {
  68                     label = "GPIO Key DOWN";
  69                     linux,code = <108>;
  70                     gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
  71                     debounce_interval = <50>;
  72                 };
  73                 enter {
  74                     label = "GPIO Key ENTER";
  75                     linux,code = <28>;
  76                     gpios = <&gpio1 29 GPIO_ACTIVE_LOW>;
  77                     debounce_interval = <50>;
  78                 };
  79                 esc {
  80                     label = "GPIO Key ESC";
  81                     linux,code = <1>;
  82                     gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
  83                     debounce_interval = <50>;
  84                 };
  85             };
  86         };
  87     };
  88 };
  89