74 lines
1.9 KiB
Diff
74 lines
1.9 KiB
Diff
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From 9a1082df2964ca80d0caf2ffd4eea5982bb3a96d Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megi@xff.cz>
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Date: Sun, 4 Sep 2022 22:53:30 +0200
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Subject: [PATCH 269/389] arm64: dts: rk3399-pinephone-pro: Add support for
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volume keys
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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These are implemented via regular ADC, so regular polling is needed,
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for these keys to work.
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Signed-off-by: Martijn Braam <martijn@brixit.nl>
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Co-developed-by: Kamil Trzciński <ayufan@ayufan.eu>
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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.../dts/rockchip/rk3399-pinephone-pro.dts | 26 +++++++++++++++++++
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1 file changed, 26 insertions(+)
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diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
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index 2e058c315025..ababcd74ebd9 100644
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--- a/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinephone-pro.dts
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@@ -10,6 +10,7 @@
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*/
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/dts-v1/;
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+#include <dt-bindings/input/gpio-keys.h>
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#include <dt-bindings/input/linux-event-codes.h>
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#include "rk3399.dtsi"
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#include "rk3399-opp.dtsi"
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@@ -29,6 +30,26 @@ chosen {
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stdout-path = "serial2:115200n8";
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};
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+ adc-keys {
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+ compatible = "adc-keys";
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+ io-channels = <&saradc 1>;
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+ io-channel-names = "buttons";
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+ keyup-threshold-microvolt = <1600000>;
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+ poll-interval = <100>;
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+
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+ button-up {
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+ label = "Volume Up";
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+ linux,code = <KEY_VOLUMEUP>;
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+ press-threshold-microvolt = <100000>;
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+ };
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+
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+ button-down {
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+ label = "Volume Down";
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+ linux,code = <KEY_VOLUMEDOWN>;
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+ press-threshold-microvolt = <300000>;
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+ };
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+ };
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+
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gpio-keys {
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compatible = "gpio-keys";
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pinctrl-names = "default";
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@@ -367,6 +388,11 @@ vcc1v8_codec_en: vcc1v8-codec-en {
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};
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};
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+&saradc {
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+ vref-supply = <&vcca1v8_s3>;
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+ status = "okay";
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+};
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+
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&sdmmc {
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bus-width = <4>;
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cap-sd-highspeed;
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--
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2.35.3
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