From c53f3a5ea7b36f21e929fe64d6424ee21466af09 Mon Sep 17 00:00:00 2001
From: Leo Wen <leo.wen@rock-chips.com>
Date: Thu, 7 Mar 2019 17:56:55 +0800
Subject: [PATCH] arm64: dts: rockchip: Add adc-keys node for rk3326 robot

Change-Id: Ib7bae5b08ad8695359d3fcdea3893e707fdae522
Signed-off-by: Leo Wen <leo.wen@rock-chips.com>
---
 .../rk3326-evb-lp3-v10-robot-linux.dts        | 44 +++++++++++++++++++
 .../rk3326-evb-lp3-v10-robot-no-gpu-linux.dts | 44 +++++++++++++++++++
 2 files changed, 88 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-linux.dts b/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-linux.dts
index 79ff1b3a3680..74522bf761bc 100644
--- a/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-linux.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-linux.dts
@@ -6,12 +6,51 @@
 /dts-v1/;
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/input/input.h>
 #include "px30-robot.dtsi"
 
 / {
 	model = "Rockchip rk3326 evb lpddr3 v10 board for robot linux";
 	compatible = "rockchip,rk3326-evb-lp3-v10-robot-linux", "rockchip,rk3326";
 
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 2>;
+		io-channel-names = "buttons";
+		poll-interval = <100>;
+		keyup-threshold-microvolt = <1800000>;
+
+		esc-key {
+			linux,code = <KEY_ESC>;
+			label = "esc";
+			press-threshold-microvolt = <1310000>;
+		};
+
+		home-key {
+			linux,code = <KEY_HOME>;
+			label = "home";
+			press-threshold-microvolt = <624000>;
+		};
+
+		menu-key {
+			linux,code = <KEY_MENU>;
+			label = "menu";
+			press-threshold-microvolt = <987000>;
+		};
+
+		vol-down-key {
+			linux,code = <KEY_VOLUMEDOWN>;
+			label = "volume down";
+			press-threshold-microvolt = <300000>;
+		};
+
+		vol-up-key {
+			linux,code = <KEY_VOLUMEUP>;
+			label = "volume up";
+			press-threshold-microvolt = <17000>;
+		};
+	};
+
 	rk817-sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,format = "i2s";
@@ -563,6 +602,11 @@
 	status = "okay";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vcc1v8_soc>;
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-mmc-highspeed;
diff --git a/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-no-gpu-linux.dts b/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-no-gpu-linux.dts
index 6a316dfa74aa..371b50a0f68a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-no-gpu-linux.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3326-evb-lp3-v10-robot-no-gpu-linux.dts
@@ -6,12 +6,51 @@
 /dts-v1/;
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/pinctrl/rockchip.h>
+#include <dt-bindings/input/input.h>
 #include "px30-robot-no-gpu.dtsi"
 
 / {
 	model = "Rockchip rk3326 evb lpddr3 v10 board for robot linux";
 	compatible = "rockchip,rk3326-evb-lp3-v10-robot-linux", "rockchip,rk3326";
 
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 2>;
+		io-channel-names = "buttons";
+		poll-interval = <100>;
+		keyup-threshold-microvolt = <1800000>;
+
+		esc-key {
+			linux,code = <KEY_ESC>;
+			label = "esc";
+			press-threshold-microvolt = <1310000>;
+		};
+
+		home-key {
+			linux,code = <KEY_HOME>;
+			label = "home";
+			press-threshold-microvolt = <624000>;
+		};
+
+		menu-key {
+			linux,code = <KEY_MENU>;
+			label = "menu";
+			press-threshold-microvolt = <987000>;
+		};
+
+		vol-down-key {
+			linux,code = <KEY_VOLUMEDOWN>;
+			label = "volume down";
+			press-threshold-microvolt = <300000>;
+		};
+
+		vol-up-key {
+			linux,code = <KEY_VOLUMEUP>;
+			label = "volume up";
+			press-threshold-microvolt = <17000>;
+		};
+	};
+
 	rk817-sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,format = "i2s";
@@ -558,6 +597,11 @@
 	status = "okay";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vcc1v8_soc>;
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-mmc-highspeed;