Commit d7197d56 authored by Johan Jonker's avatar Johan Jonker Committed by Heiko Stuebner
Browse files

ARM: dts: rockchip: add adc-keys node to rk3066a-mk808 



The MK808 has a button inside the cover for the boot loader to do
some action. Add the adc-keys node to the rk3066a-mk808.dts file.
The rk3066 has a higher maximum DC supply voltage for the analog part of
SAR-ADC VDDA_SARADC of 2.75V then other Rockchip SoCs.
For the "rockchip,saradc" node is a vref-supply property required,
so add a regulator for it as well.

Signed-off-by: default avatarJohan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210828092755.24560-1-jbx6244@gmail.com


Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent 6880fa6c

arch/arm/boot/dts/rk3066a-mk808.dts

+27 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 
 */



/dts-v1/;

#include <dt-bindings/input/input.h>

#include "rk3066a.dtsi"



/ {
@@ -24,6 +25,20 @@ memory@60000000 { 
		device_type = "memory";

	};



	adc-keys {

		compatible = "adc-keys";

		io-channels = <&saradc 1>;

		io-channel-names = "buttons";

		keyup-threshold-microvolt = <2500000>;

		poll-interval = <100>;



		recovery {

			label = "recovery";

			linux,code = <KEY_VENDOR>;

			press-threshold-microvolt = <0>;

		};

	};



	gpio-leds {

		compatible = "gpio-leds";
@@ -46,6 +61,13 @@ hdmi_con_in: endpoint { 
		};

	};



	vcc_2v5: vcc-2v5 {

		compatible = "regulator-fixed";

		regulator-name = "vcc_2v5";

		regulator-min-microvolt = <2500000>;

		regulator-max-microvolt = <2500000>;

	};



	vcc_io: vcc-io {

		compatible = "regulator-fixed";

		regulator-name = "vcc_io";
@@ -164,6 +186,11 @@ wifi_pwr: wifi-pwr { 
	};

};



&saradc {

	vref-supply = <&vcc_2v5>;

	status = "okay";

};



&uart2 {

	status = "okay";

};