[PATCH v4 8/8] arm64: dts: rockchip: add Mask Rom key on NanoPC-T6

[Marcin Juszkiewicz]

Mask Rom key is connected to SARADC and can be read from OS.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz at linaro.org>
---
 arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
index e63b2faee3b5..69abcf1e5611 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi
@@ -8,6 +8,7 @@
 /dts-v1/;
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/rockchip.h>
 #include <dt-bindings/usb/pd.h>
 #include "rk3588.dtsi"
@@ -21,6 +22,20 @@ aliases {
 		mmc1 = &sdmmc;
 	};
 
+	adc-keys-0 {
+		compatible = "adc-keys";
+		io-channels = <&saradc 0>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1800000>;
+		poll-interval = <100>;
+
+		button-maskrom {
+			label = "Mask Rom";
+			linux,code = <KEY_SETUP>;
+			press-threshold-microvolt = <2000>;
+		};
+	};
+
 	chosen {
 		stdout-path = "serial2:1500000n8";
 	};

-- 
2.46.0