From: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Date: Fri, 3 Jul 2020 22:14:13 +0000 (+0200)
Subject: arm64: dts: rockchip: add adc joystick to Odroid Go Advance
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c20e6dd9a953d62f14399dabf457dce61dd5611f;p=linux.git

arm64: dts: rockchip: add adc joystick to Odroid Go Advance

Add the now usable adc-joystick node that describes the analog
joystick connected to two saradc channels from the rk3326 soc.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Link: https://lore.kernel.org/r/20200703221413.269800-1-heiko@sntech.de
---

diff --git a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
index 35bd6b904b9c7..e21372b8e9043 100644
--- a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
@@ -18,6 +18,30 @@
 		stdout-path = "serial2:115200n8";
 	};
 
+	adc-joystick {
+		compatible = "adc-joystick";
+		io-channels = <&saradc 1>,
+			      <&saradc 2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		axis@0 {
+			reg = <0>;
+			abs-flat = <10>;
+			abs-fuzz = <10>;
+			abs-range = <172 772>;
+			linux,code = <ABS_X>;
+		};
+
+		axis@1 {
+			reg = <1>;
+			abs-flat = <10>;
+			abs-fuzz = <10>;
+			abs-range = <278 815>;
+			linux,code = <ABS_Y>;
+		};
+	};
+
 	backlight: backlight {
 		compatible = "pwm-backlight";
 		power-supply = <&vcc_bl>;