[PATCH] arm64: dts: rockchip: add adc joystick to Odroid Go Advance

Heiko Stuebner
2020-07-03T22:15:47Z

From: Heiko Stuebner <heiko.stuebner@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.stuebner@theobroma-systems.com>
---
This still needs the iio-joystick driver to get merged first.
See http://lore.kernel.org/r/20200517194904.34758-1-contact@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