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linux
ARM: dts: lpc4350-hitex-eval: add joystick, buttons and leds
Add the joystick, buttons and LEDs connected to the I2C I/O expander.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
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arch/arm/boot/dts/lpc4350-hitex-eval.dts
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arch/arm/boot/dts/lpc4350-hitex-eval.dts
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#include "lpc18xx.dtsi"
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#include "lpc4350.dtsi"
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#include "dt-bindings/input/input.h"
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#include "dt-bindings/gpio/gpio.h"
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/ {
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model = "Hitex LPC4350 Evaluation Board";
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compatible = "hitex,lpc4350-eval-board", "nxp,lpc4350";
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memory {
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device_type = "memory";
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reg = <0x28000000 0x800000>; /* 8 MB */
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};
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pca_buttons {
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compatible = "gpio-keys-polled";
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#address-cells = <1>;
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#size-cells = <0>;
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poll-interval = <100>;
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autorepeat;
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button@0 {
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label = "joy:right";
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linux,code = <KEY_RIGHT>;
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gpios = <&pca_gpio 8 GPIO_ACTIVE_LOW>;
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};
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button@1 {
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label = "joy:up";
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linux,code = <KEY_UP>;
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gpios = <&pca_gpio 9 GPIO_ACTIVE_LOW>;
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};
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button@2 {
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label = "joy:enter";
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linux,code = <KEY_ENTER>;
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gpios = <&pca_gpio 10 GPIO_ACTIVE_LOW>;
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};
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button@3 {
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label = "joy:left";
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linux,code = <KEY_LEFT>;
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gpios = <&pca_gpio 11 GPIO_ACTIVE_LOW>;
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};
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button@4 {
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label = "joy:down";
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linux,code = <KEY_DOWN>;
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gpios = <&pca_gpio 12 GPIO_ACTIVE_LOW>;
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};
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button@5 {
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label = "user:sw3";
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linux,code = <KEY_F1>;
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gpios = <&pca_gpio 13 GPIO_ACTIVE_LOW>;
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};
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button@6 {
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label = "user:sw4";
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linux,code = <KEY_F2>;
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gpios = <&pca_gpio 14 GPIO_ACTIVE_LOW>;
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};
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button@7 {
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label = "user:sw5";
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linux,code = <KEY_F3>;
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gpios = <&pca_gpio 15 GPIO_ACTIVE_LOW>;
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};
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};
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pca_leds {
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compatible = "gpio-leds";
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led0 {
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label = "ext:led0";
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gpios = <&pca_gpio 0 GPIO_ACTIVE_LOW>;
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linux,default-trigger = "heartbeat";
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};
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led1 {
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label = "ext:led1";
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gpios = <&pca_gpio 1 GPIO_ACTIVE_LOW>;
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};
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led2 {
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label = "ext:led2";
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gpios = <&pca_gpio 2 GPIO_ACTIVE_LOW>;
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};
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led3 {
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label = "ext:led3";
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gpios = <&pca_gpio 3 GPIO_ACTIVE_LOW>;
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};
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};
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};
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