From: Heiko Stuebner <heiko.stueb...@theobroma-systems.com>

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.stueb...@theobroma-systems.com>
---
This still needs the iio-joystick driver to get merged first.
See http://lore.kernel.org/r/20200517194904.34758-1-cont...@artur-rojek.eu

 .../boot/dts/rockchip/rk3326-odroid-go2.dts   | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts 
b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
index b3a8f936578f..91b6d1a1839d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
@@ -24,6 +24,30 @@ backlight: backlight {
                pwms = <&pwm1 0 25000 0>;
        };
 
+       adc-joystick {
+               compatible = "adc-joystick";
+               io-channels = <&saradc 1>,
+                             <&saradc 2>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               axis@0 {
+                       reg = <0>;
+                       abs-range = <172 772>;
+                       abs-fuzz = <10>;
+                       abs-flat = <10>;
+                       linux,code = <ABS_X>;
+               };
+
+               axis@1 {
+                       reg = <1>;
+                       abs-range = <278 815>;
+                       abs-fuzz = <10>;
+                       abs-flat = <10>;
+                       linux,code = <ABS_Y>;
+               };
+       };
+
        gpio-keys {
                compatible = "gpio-keys";
                pinctrl-names = "default";
-- 
2.26.2

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