From ce6becde2e570847b8a68aca301d40a3f40f9960 Mon Sep 17 00:00:00 2001
From: Shunqian Zheng <zhengsq@rock-chips.com>
Date: Wed, 25 Jul 2018 16:58:47 +0800
Subject: [PATCH] config/dts: px3se: Rockusb mode by Vol+ and reset

Enalbe ADC keys to enter Rockusb mode by holding Vol Up
key and reset.

Change-Id: I2f17fccf890424049aff5946f439016ad76ea52d
Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
---
 arch/arm/dts/px3se-evb.dts  | 25 +++++++++++++++++++++++++
 configs/evb-px3se_defconfig |  8 +++++---
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/arch/arm/dts/px3se-evb.dts b/arch/arm/dts/px3se-evb.dts
index b434b922f7..4371b34cd8 100644
--- a/arch/arm/dts/px3se-evb.dts
+++ b/arch/arm/dts/px3se-evb.dts
@@ -6,6 +6,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/input/input.h>
 #include "rk3128.dtsi"
 #include "rk3128-u-boot.dtsi"
 
@@ -13,6 +14,26 @@
 	model = "Rockchip PX3SE Evaluation board";
 	compatible = "rockchip,px3se-evb", "rockchip,px3se";
 
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 1>;
+		io-channel-names = "buttons";
+		poll-interval = <100>;
+		keyup-threshold-microvolt = <1800000>;
+
+		vol-up {
+			label = "Volume Up";
+			linux,code = <KEY_VOLUMEUP>;
+			press-threshold-microvolt = <18000>;
+		};
+
+		vol-down {
+			label = "Volume Down";
+			linux,code = <KEY_VOLUMEDOWN>;
+			press-threshold-microvolt = <300000>;
+		};
+	};
+
 	chosen {
 		stdout-path = &uart1;
 	};
@@ -33,6 +54,10 @@
 	status = "okay";
 };
 
+&saradc {
+	status = "okay";
+};
+
 &u2phy {
 	status = "okay";
 };
diff --git a/configs/evb-px3se_defconfig b/configs/evb-px3se_defconfig
index a36e775541..c2e524e939 100644
--- a/configs/evb-px3se_defconfig
+++ b/configs/evb-px3se_defconfig
@@ -2,18 +2,18 @@ CONFIG_ARM=y
 CONFIG_ARCH_ROCKCHIP=y
 CONFIG_ROCKCHIP_RK3128=y
 CONFIG_RKIMG_BOOTLOADER=y
-CONFIG_ANDROID_BOOTLOADER=y
-CONFIG_ANDROID_BOOT_IMAGE=y
 CONFIG_DEFAULT_DEVICE_TREE="px3se-evb"
 CONFIG_DEBUG_UART=y
+CONFIG_ANDROID_BOOT_IMAGE=y
 CONFIG_FIT=y
 # CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_ANDROID_BOOTLOADER=y
 # CONFIG_FASTBOOT is not set
 # CONFIG_CMD_IMLS is not set
 CONFIG_CMD_GPT=y
 CONFIG_CMD_LOAD_ANDROID=y
-CONFIG_CMD_BOOT_ROCKCHIP=y
 CONFIG_CMD_BOOT_ANDROID=y
+CONFIG_CMD_BOOT_ROCKCHIP=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_USB_MASS_STORAGE=y
@@ -25,6 +25,8 @@ CONFIG_SYSCON=y
 CONFIG_CLK=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_DM_KEY=y
+CONFIG_ADC_KEY=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_PHY=y