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arm64: dts: rockchip: Add maskrom button to Radxa E20C

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Radxa E20C has two buttons, one SARADC maskrom button and one GPIO user
button.

Add support for the maskrom button using a adc-keys node, also add the
regulators used by SARADC controller.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20250304201642.831218-5-jonas@kwiboo.se
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Jonas Karlman 2025-03-04 20:16:37 +00:00 committed by Heiko Stuebner
parent 6e58302c84
commit 3a2819ee9c
1 changed files with 48 additions and 0 deletions
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48
arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
View File

@ -19,6 +19,20 @@ 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";
@ -61,6 +75,35 @@ led-wan {
linux,default-trigger = "netdev";
};
};
vcc_1v8: regulator-1v8-vcc {
compatible = "regulator-fixed";
regulator-name = "vcc_1v8";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
vin-supply = <&vcc_3v3>;
};
vcc_3v3: regulator-3v3-vcc {
compatible = "regulator-fixed";
regulator-name = "vcc_3v3";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&vcc5v0_sys>;
};
vcc5v0_sys: regulator-5v0-vcc-sys {
compatible = "regulator-fixed";
regulator-name = "vcc5v0_sys";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
};
};
&pinctrl {
@ -85,6 +128,11 @@ wan_led_g: wan-led-g {
};
};
&saradc {
vref-supply = <&vcc_1v8>;
status = "okay";
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0m0_xfer>;