ARM: dts: sun8i: Enable lradc on a23-ippo-q8h-v5

The a23-ippo-q8h tablets have volume up/down buttons using the lradc. This
has been tested on both a v5 and a v1.2 tablet.

Tested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
index 1da31d0..623573e 100644 (file)
--- a/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
+++ b/arch/arm/boot/dts/sun8i-a23-ippo-q8h-v5.dts
@@ -52,6 +52,7 @@
 #include "sunxi-common-regulators.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
 
 / {
@@ -86,6 +87,25 @@
                        };
                };
 
+               lradc: lradc@01c22800 {
+                       vref-supply = <&reg_vcc3v0>;
+                       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>;
+                       };
+               };
+
                i2c0: i2c@01c2ac00 {
                        pinctrl-names = "default";
                        pinctrl-0 = <&i2c0_pins_a>;