[PATCH 6/9] arm64: dts: rockchip: Add saradc and adc buttons to Khadas Edge 2 and enable tsadc

[efectn]

From: Muhammed Efe Cetin <efectn@xxxxxxxxxxxxxx>

This commit enables tsadc, saradc and the
function button on saradc line for Khadas Edge 2.

Signed-off-by: Muhammed Efe Cetin <efectn@xxxxxxxxxxxxxx>
---
 .../dts/rockchip/rk3588s-khadas-edge2.dts     | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts b/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
index 5a3b52e62dce..dfcdbec3534d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-khadas-edge2.dts
@@ -3,6 +3,7 @@
 /dts-v1/;
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/rockchip.h>
 #include <dt-bindings/leds/common.h>
 #include "rk3588s.dtsi"
@@ -20,6 +21,20 @@ 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-function {
+			label = "Function";
+			linux,code = <KEY_FN>;
+			press-threshold-microvolt = <17000>;
+		};
+	};
+
 	ir-receiver {
 		compatible = "gpio-ir-receiver";
 		gpios = <&gpio1 RK_PA7 GPIO_ACTIVE_LOW>;
@@ -257,6 +272,11 @@ &pwm15 {
 	status = "okay";
 };
 
+&saradc {
+	vref-supply = <&avcc_1v8_s0>;
+	status = "okay";
+};
+
 &sdhci {
 	bus-width = <8>;
 	no-sdio;
@@ -604,6 +624,10 @@ regulator-state-mem {
 	};
 };
 
+&tsadc {
+	status = "okay";
+};
+
 &uart2 {
 	pinctrl-0 = <&uart2m0_xfer>;
 	status = "okay";
-- 
2.43.1