[PATCH] arm64: dts: rockchip: add maskrom ADC button to NanoPi R76S

[Ryan Leung via B4 Relay]

From: Ryan Leung <untilscour at protonmail.com>

The FriendlyELEC Nanopi R76S has a MASKROM button connected via SARADC
(sheets 5, 19 of the schematic [1]). Add the button to the device tree.

[1]: https://wiki.friendlyelec.com/wiki/images/6/60/NanoPi_R76S_LP4X_2411_SCH.pdf

Signed-off-by: Ryan Leung <untilscour at protonmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
index 7f356fd41574..b6afeb4163d1 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-r76s.dts
@@ -29,6 +29,20 @@ chosen {
 		stdout-path = "serial0:1500000n8";
 	};
 
+	adc-keys {
+		compatible = "adc-keys";
+		io-channels = <&saradc 0>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1800000>;
+		poll-interval = <100>;
+
+		button-maskrom {
+			label = "maskrom";
+			linux,code = <KEY_SETUP>;
+			press-threshold-microvolt = <0>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";

---
base-commit: d2abcbb905b0e4b2e06b257fa1e5bcf4faa6dbda
change-id: 20261011-nanopi-r76s-adc-eab72763e52e

Best regards,
--  
Ryan Leung <untilscour at protonmail.com>