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-rw-r--r--arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts50
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
index 03e3d76626dd..fc0e86cb4cde 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
@@ -45,10 +45,55 @@
/dts-v1/;
#include "meson-gxbb-p20x.dtsi"
+#include <dt-bindings/input/input.h>
/ {
compatible = "amlogic,p200", "amlogic,meson-gxbb";
model = "Amlogic Meson GXBB P200 Development Board";
+
+ avdd18_usb_adc: regulator-avdd18_usb_adc {
+ compatible = "regulator-fixed";
+ regulator-name = "AVDD18_USB_ADC";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ adc_keys {
+ compatible = "adc-keys";
+ io-channels = <&saradc 0>;
+ io-channel-names = "buttons";
+ keyup-threshold-microvolt = <1800000>;
+
+ button-home {
+ label = "Home";
+ linux,code = <KEY_HOME>;
+ press-threshold-microvolt = <900000>; /* 50% */
+ };
+
+ button-esc {
+ label = "Esc";
+ linux,code = <KEY_ESC>;
+ press-threshold-microvolt = <684000>; /* 38% */
+ };
+
+ button-up {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ press-threshold-microvolt = <468000>; /* 26% */
+ };
+
+ button-down {
+ label = "Volume Down";
+ linux,code = <KEY_VOLUMEDOWN>;
+ press-threshold-microvolt = <252000>; /* 14% */
+ };
+
+ button-menu {
+ label = "Menu";
+ linux,code = <KEY_MENU>;
+ press-threshold-microvolt = <0>; /* 0% */
+ };
+ };
};
&i2c_B {
@@ -56,3 +101,8 @@
pinctrl-0 = <&i2c_b_pins>;
pinctrl-names = "default";
};
+
+&saradc {
+ status = "okay";
+ vref-supply = <&avdd18_usb_adc>;
+};