[PATCH] arm64: dts: rockchip: add maskrom and recovery ADC buttons to NanoPi M5

[Ryan Leung via B4 Relay]

From: Ryan Leung <untilscour at protonmail.com>

The FriendlyELEC Nanopi M5 has MASKROM and RECOVERY buttons connected
via SARADC (sheets 6 and 19 of the schematic for both the LPDDR4X [1]
and LPDDR5 [2] versions). Add the two buttons to the device tree.

[1]: https://wiki.friendlyelec.com/wiki/images/1/10/NanoPi_M5_LP4X_2411_SCH.PDF
[2]: https://wiki.friendlyelec.com/wiki/images/9/97/NanoPi_M5_LP5_2411_SCH.pdf

Signed-off-by: Ryan Leung <untilscour at protonmail.com>
---
 arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts | 28 +++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
index 3a305408fa16..46c88b1ccde7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-nanopi-m5.dts
@@ -41,6 +41,34 @@ hdmi_con_in: endpoint {
 		};
 	};
 
+	adc-keys-0 {
+		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>;
+		};
+	};
+
+	adc-keys-1 {
+		compatible = "adc-keys";
+		io-channels = <&saradc 1>;
+		io-channel-names = "buttons";
+		keyup-threshold-microvolt = <1800000>;
+		poll-interval = <100>;
+
+		button-recovery {
+			label = "recovery";
+			linux,code = <KEY_VENDOR>;
+			press-threshold-microvolt = <0>;
+		};
+	};
+
 	keys {
 		compatible = "gpio-keys";
 

---
base-commit: d2abcbb905b0e4b2e06b257fa1e5bcf4faa6dbda
change-id: 20261011-nanopi-m5-adc-6e03d4b39577

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