The tablet has volume up/down buttons on the side, connected to the LRADC.
Signed-off-by: Chen-Yu Tsai <[email protected]>
---
arch/arm/boot/dts/sun5i-a13-hsg-h702.dts | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/sun5i-a13-hsg-h702.dts
b/arch/arm/boot/dts/sun5i-a13-hsg-h702.dts
index 990f9d61ae4d..4b8808ab9711 100644
--- a/arch/arm/boot/dts/sun5i-a13-hsg-h702.dts
+++ b/arch/arm/boot/dts/sun5i-a13-hsg-h702.dts
@@ -45,6 +45,7 @@
#include "sunxi-common-regulators.dtsi"
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
/ {
@@ -96,6 +97,25 @@
status = "okay";
};
+&lradc {
+ vref-supply = <®_ldo2>;
+ status = "okay";
+
+ button@200 {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ channel = <0>;
+ voltage = <200000>;
+ };
+
+ button@400 {
+ label = "Volume Down";
+ linux,code = <KEY_VOLUMEDOWN>;
+ channel = <0>;
+ voltage = <400000>;
+ };
+};
+
&mmc0 {
pinctrl-names = "default";
pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_h702>;
--
2.5.0
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