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arm64: dts: rockchip: add ADC buttons to rk3588-evb1

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The Rockchip EVB1 has a couple of buttons connected via an ADC
line. Let's add them to its devicetree.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20231005134357.37171-1-sebastian.reichel@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Sebastian Reichel
2023-10-05 15:43:57 +02:00
committed by Heiko Stuebner
parent dd6dc0c4c1
commit afa933c208
1 changed files with 38 additions and 0 deletions
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38
arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
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@@ -7,6 +7,7 @@
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/rockchip.h>
#include "rk3588.dtsi"
@@ -23,6 +24,38 @@ chosen {
stdout-path = "serial2:1500000n8";
};
adc-keys {
compatible = "adc-keys";
io-channels = <&saradc 1>;
io-channel-names = "buttons";
keyup-threshold-microvolt = <1800000>;
poll-interval = <100>;
button-vol-up {
label = "Volume Up";
linux,code = <KEY_VOLUMEUP>;
press-threshold-microvolt = <17000>;
};
button-vol-down {
label = "Volume Down";
linux,code = <KEY_VOLUMEDOWN>;
press-threshold-microvolt = <417000>;
};
button-menu {
label = "Menu";
linux,code = <KEY_MENU>;
press-threshold-microvolt = <890000>;
};
button-escape {
label = "Escape";
linux,code = <KEY_ESC>;
press-threshold-microvolt = <1235000>;
};
};
backlight: backlight {
compatible = "pwm-backlight";
power-supply = <&vcc12v_dcin>;
@@ -286,6 +319,11 @@ &pwm2 {
status = "okay";
};
&saradc {
vref-supply = <&vcc_1v8_s0>;
status = "okay";
};
&sdhci {
bus-width = <8>;
no-sdio;