The only adc button connected to adc input is recovery button.
Signed-off-by: Randy Li <ayaka@xxxxxxxxxxx>
---
arch/arm/boot/dts/rk3288-firefly-reload.dts | 17 +++++++++++++++++
arch/arm/boot/dts/rk3288-firefly.dtsi | 13 +++++++++++++
2 files changed, 30 insertions(+)
diff --git a/arch/arm/boot/dts/rk3288-firefly-reload.dts b/arch/arm/boot/dts/rk3288-firefly-reload.dts
index d0b3204a..ed1baa8 100644
--- a/arch/arm/boot/dts/rk3288-firefly-reload.dts
+++ b/arch/arm/boot/dts/rk3288-firefly-reload.dts
@@ -48,6 +48,19 @@
model = "Firefly-RK3288-reload";
compatible = "firefly,firefly-rk3288-reload", "rockchip,rk3288";
+ adc-keys {
+ compatible = "adc-keys";
+ io-channels = <&saradc 1>;
+ io-channel-names = "buttons";
+ keyup-threshold-microvolt = <1800000>;
+
+ button-recovery {
+ label = "Recovery";
+ linux,code = <KEY_BACK>;
+ press-threshold-microvolt = <0>;
+ };
+ };
+
gpio-keys {
compatible = "gpio-keys";
@@ -246,6 +259,10 @@
status = "okay";
};
+&saradc {
+ status = "okay";
+};
+
&sdmmc {
bus-width = <4>;
cap-mmc-highspeed;
diff --git a/arch/arm/boot/dts/rk3288-firefly.dtsi b/arch/arm/boot/dts/rk3288-firefly.dtsi
index 10793ac..63b8b2d 100644
--- a/arch/arm/boot/dts/rk3288-firefly.dtsi
+++ b/arch/arm/boot/dts/rk3288-firefly.dtsi
@@ -49,6 +49,19 @@
reg = <0 0x80000000>;
};
+ adc-keys {
+ compatible = "adc-keys";
+ io-channels = <&saradc 1>;
+ io-channel-names = "buttons";
+ keyup-threshold-microvolt = <1800000>;
+
+ button-recovery {
+ label = "Recovery";
+ linux,code = <KEY_BACK>;
+ press-threshold-microvolt = <0>;
+ };
+ };
+
dovdd_1v8: dovdd-1v8-regulator {
compatible = "regulator-fixed";
regulator-name = "dovdd_1v8";
--
2.9.3
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