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

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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: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210828092755.24560-1-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Johan Jonker 2021-08-28 11:27:55 +02:00 committed by Heiko Stuebner
parent 6880fa6c56
commit d7197d56c9
1 changed files with 27 additions and 0 deletions
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27
arch/arm/boot/dts/rk3066a-mk808.dts
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@ -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";
};