From a3bf5c75fcd580bfe2846fda593a4a50bdee1e27 Mon Sep 17 00:00:00 2001
From: Weiwen Chen <cww@rock-chips.com>
Date: Tue, 18 Oct 2022 20:46:21 +0800
Subject: [PATCH] ARM: dts: rockchip: rv1106-evb: Add adc-key

As saradc is disabled, so adc-key is disabled default.
To enable adc-key, add saradc as follow:

&saradc {
    status = "okay";
    vref-supply = <&vcc_1v8>;
};

Signed-off-by: Weiwen Chen <cww@rock-chips.com>
Change-Id: Ia111f503ed187432ca13dd9a6d37cc000ac25d2b
---
 arch/arm/boot/dts/rv1106-evb.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/rv1106-evb.dtsi b/arch/arm/boot/dts/rv1106-evb.dtsi
index 114c23eee5c5..f8e002b9df11 100644
--- a/arch/arm/boot/dts/rv1106-evb.dtsi
+++ b/arch/arm/boot/dts/rv1106-evb.dtsi
@@ -3,9 +3,28 @@
  * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
  */
 #include "rv1106-amp.dtsi"
+#include <dt-bindings/input/input.h>
 
 / {
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 0>;
+		io-channel-names = "buttons";
+		poll-interval = <100>;
+		keyup-threshold-microvolt = <1800000>;
 
+		key_volumeup-key {
+			label = "key_volumeup";
+			linux,code = <KEY_VOLUMEUP>;
+			press-threshold-microvolt = <0>;
+		};
+
+		key_volumedown-key {
+			label = "key_volumedown";
+			linux,code = <KEY_VOLUMEDOWN>;
+			press-threshold-microvolt = <400781>;
+		};
+	};
 };
 
 &fiq_debugger {