The Rockchip EVB1 has a couple of buttons connected via an ADC
line. Let's add them to its devicetree.
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
.../boot/dts/rockchip/rk3588-evb1-v10.dts | 38 +++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
index c3fe58e39e99..b9d789d57862 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
@@ -7,6 +7,7 @@
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/rockchip.h>
#include "rk3588.dtsi"
@@ -23,6 +24,38 @@ chosen {
stdout-path = "serial2:1500000n8";
};
+ adc-keys {
+ compatible = "adc-keys";
+ io-channels = <&saradc 1>;
+ io-channel-names = "buttons";
+ keyup-threshold-microvolt = <1800000>;
+ poll-interval = <100>;
+
+ button-vol-up {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ press-threshold-microvolt = <17000>;
+ };
+
+ button-vol-down {
+ label = "Volume Down";
+ linux,code = <KEY_VOLUMEDOWN>;
+ press-threshold-microvolt = <417000>;
+ };
+
+ button-menu {
+ label = "Menu";
+ linux,code = <KEY_MENU>;
+ press-threshold-microvolt = <890000>;
+ };
+
+ button-escape {
+ label = "Escape";
+ linux,code = <KEY_ESC>;
+ press-threshold-microvolt = <1235000>;
+ };
+ };
+
backlight: backlight {
compatible = "pwm-backlight";
power-supply = <&vcc12v_dcin>;
@@ -286,6 +319,11 @@ &pwm2 {
status = "okay";
};
+&saradc {
+ vref-supply = <&vcc_1v8_s0>;
+ status = "okay";
+};
+
&sdhci {
bus-width = <8>;
no-sdio;
--
2.40.1
