ARM: dts: lpc4357-ea4357: add gpio joystick

Hook up the small joystick found on the EA4357 devkit.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>

diff --git a/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts b/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
index d02f93f19bf5b79f9525e953ebe30cc8cf7ec786..ee9d97350d34b99032b1fcbf52fbc8f0b99c0153 100644 (file)
--- a/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
+++ b/arch/arm/boot/dts/lpc4357-ea4357-devkit.dts
@@ -15,6 +15,9 @@
 #include "lpc18xx.dtsi"
 #include "lpc4357.dtsi"
 
+#include "dt-bindings/input/input.h"
+#include "dt-bindings/gpio/gpio.h"
+
 / {
        model = "Embedded Artists' LPC4357 Developer's Kit";
        compatible = "ea,lpc4357-developers-kit", "nxp,lpc4357", "nxp,lpc4350";
@@ -42,9 +45,58 @@
                regulator-min-microvolt = <3300000>;
                regulator-max-microvolt = <3300000>;
        };
+
+       gpio_joystick {
+               compatible = "gpio-keys-polled";
+               pinctrl-names = "default";
+               pinctrl-0 = <&gpio_joystick_pins>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+               poll-interval = <100>;
+               autorepeat;
+
+               button@0 {
+                       label = "joy_enter";
+                       linux,code = <KEY_ENTER>;
+                       gpios = <&gpio LPC_GPIO(4,8) GPIO_ACTIVE_LOW>;
+               };
+
+               button@1 {
+                       label = "joy_left";
+                       linux,code = <KEY_LEFT>;
+                       gpios = <&gpio LPC_GPIO(4,9) GPIO_ACTIVE_LOW>;
+               };
+
+               button@2 {
+                       label = "joy_up";
+                       linux,code = <KEY_UP>;
+                       gpios = <&gpio LPC_GPIO(4,10) GPIO_ACTIVE_LOW>;
+               };
+
+               button@3 {
+                       label = "joy_right";
+                       linux,code = <KEY_RIGHT>;
+                       gpios = <&gpio LPC_GPIO(4,12) GPIO_ACTIVE_LOW>;
+               };
+
+               button@4 {
+                       label = "joy_down";
+                       linux,code = <KEY_DOWN>;
+                       gpios = <&gpio LPC_GPIO(4,13) GPIO_ACTIVE_LOW>;
+               };
+       };
 };
 
 &pinctrl {
+       gpio_joystick_pins: gpio-joystick-pins {
+               gpio_joystick_cfg {
+                       pins =  "p9_0", "p9_1", "pa_1", "pa_2", "pa_3";
+                       function = "gpio";
+                       input-enable;
+                       bias-disable;
+               };
+       };
+
        sdmmc_pins: sdmmc-pins {
                sdmmc_clk_cfg {
                        pins = "pc_0";