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arm64: dts: rockchip: Add support for volume keys to rk3399-pinephone-pro

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These are implemented via regular ADC, so regular polling is needed,
for these keys to work.

Co-developed-by: Martijn Braam <martijn@brixit.nl>
Signed-off-by: Martijn Braam <martijn@brixit.nl>
Co-developed-by: Kamil Trzciński <ayufan@ayufan.eu>
Signed-off-by: Kamil Trzciński <ayufan@ayufan.eu>
Signed-off-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Ondrej Jirman <megi@xff.cz>
Link: https://lore.kernel.org/r/20230405123813.2272919-1-pbrobinson@gmail.com
[increased Volume-Down voltage to 600mV as suggested by Ondrej]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Ondrej Jirman 2023-04-05 13:38:13 +01:00 committed by Heiko Stuebner
parent 1bb69cd4a3
commit d3150ed535
1 changed files with 26 additions and 0 deletions
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26
arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
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@ -10,6 +10,7 @@
*/
/dts-v1/;
#include <dt-bindings/input/gpio-keys.h>
#include <dt-bindings/input/linux-event-codes.h>
#include "rk3399.dtsi"
#include "rk3399-opp.dtsi"
@ -29,6 +30,26 @@
stdout-path = "serial2:115200n8";
};
adc-keys {
compatible = "adc-keys";
io-channels = <&saradc 1>;
io-channel-names = "buttons";
keyup-threshold-microvolt = <1600000>;
poll-interval = <100>;
button-up {
label = "Volume Up";
linux,code = <KEY_VOLUMEUP>;
press-threshold-microvolt = <100000>;
};
button-down {
label = "Volume Down";
linux,code = <KEY_VOLUMEDOWN>;
press-threshold-microvolt = <600000>;
};
};
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm0 0 50000 0>;
@ -519,6 +540,11 @@
status = "okay";
};
&saradc {
vref-supply = <&vcca1v8_s3>;
status = "okay";
};
&sdmmc {
bus-width = <4>;
cap-sd-highspeed;