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arm64: dts: rockchip: Add maskrom button to NanoPi R5S + R5C

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Both the R5S and R5C have a MASKROM button connected via saradc.
For both the R5S as the R5C it's described on page 9 of their
respective schematic, identified as 'Recovery'.

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Link: https://lore.kernel.org/r/20250716083355.327451-1-didi.debian@cknow.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Diederik de Haas
2025-07-16 10:33:35 +02:00
committed by Heiko Stuebner
parent b2501f327b
commit 07e04c071a
1 changed files with 14 additions and 0 deletions
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14
arch/arm64/boot/dts/rockchip/rk3568-nanopi-r5s.dtsi
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@@ -25,6 +25,20 @@ chosen: chosen {
stdout-path = "serial2:1500000n8";
};
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>;
};
};
hdmi-con {
compatible = "hdmi-connector";
type = "a";