+sjg
On Tue, 28 Nov 2017, Andy Yan wrote:
RV1108 EVB uses a adc-based recovery(VOL+) key, which
connected to saradc channel 0.
This patch add dt node for it.
Signed-off-by: Andy Yan <andy....@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
See below for comments.
---
arch/arm/dts/rv1108-evb.dts | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/dts/rv1108-evb.dts b/arch/arm/dts/rv1108-evb.dts
index 8e857b2..66da40c 100644
--- a/arch/arm/dts/rv1108-evb.dts
+++ b/arch/arm/dts/rv1108-evb.dts
@@ -7,11 +7,32 @@
/dts-v1/;
#include "rv1108.dtsi"
+#include <dt-bindings/input/input.h>
/ {
model = "Rockchip RV1108 Evaluation board";
compatible = "rockchip,rv1108-evb", "rockchip,rv1108";
+ adc-keys {
+ compatible = "adc-keys";
The DTS-binding should be documented in the documentation directory.
"adc-keys" seems to be a standard binding in Linux and used by the input
subsystem: so this sounds like it should be a driver in drivers/input for
U-Boot that uses an ADC driver.
+ io-channels = <&saradc 0>;
+ io-channel-names = "buttons";
+ poll-interval = <100>;
+ keyup-threshold-microvolt = <3300000>;
+
+ button-up {
+ label = "Volume Up";
+ linux,code = <KEY_VOLUMEUP>;
+ press-threshold-microvolt = <0>;
+ };
+
+ button-down {
+ label = "Volume Down";
+ linux,code = <KEY_VOLUMEDOWN>;
+ press-threshold-microvolt = <1650000>;
+ };
+ };
+
memory@60000000 {
device_type = "memory";
reg = <0x60000000 0x08000000>;
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