Add support for PMIC and GPIO keys on the Radxa NIO 12L board:
Declare a gpio-keys node for the Volume Up button using GPIO106.
Add the corresponding pin configuration in the pinctrl node.
Add a mediatek,mt6359-keys subnode under the PMIC to handle the
power and home buttons exposed by the MT6359.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Julien Massot <julien.massot@xxxxxxxxxxxxx>
---
.../boot/dts/mediatek/mt8395-radxa-nio-12l.dts | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
index 329c60cc6a6be0b4be8c0b8bb033b32d35302804..fd596e2298285361ad7c2fb828feec598d75a73e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
@@ -8,6 +8,7 @@
#include "mt8195.dtsi"
#include "mt6359.dtsi"
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pinctrl/mt8195-pinfunc.h>
#include <dt-bindings/regulator/mediatek,mt6360-regulator.h>
@@ -60,6 +61,18 @@ backlight: backlight {
status = "disabled";
};
+ keys: gpio-keys {
+ compatible = "gpio-keys";
+
+ button-volume-up {
+ wakeup-source;
+ debounce-interval = <100>;
+ gpios = <&pio 106 GPIO_ACTIVE_LOW>;
+ label = "volume_up";
+ linux,code = <KEY_VOLUMEUP>;
+ };
+ };
+
wifi_vreg: regulator-wifi-3v3-en {
compatible = "regulator-fixed";
regulator-name = "wifi_3v3_en";
@@ -626,6 +639,14 @@ pins-txd {
};
};
+ gpio_key_pins: gpio-keys-pins {
+ pins {
+ pinmux = <PINMUX_GPIO106__FUNC_GPIO106>;
+ bias-pull-up;
+ input-enable;
+ };
+ };
+
i2c2_pins: i2c2-pins {
pins-bus {
pinmux = <PINMUX_GPIO12__FUNC_SDA2>,
@@ -880,6 +901,21 @@ &pciephy {
&pmic {
interrupts-extended = <&pio 222 IRQ_TYPE_LEVEL_HIGH>;
+
+ mt6359keys: keys {
+ compatible = "mediatek,mt6359-keys";
+ mediatek,long-press-mode = <1>;
+ power-off-time-sec = <0>;
+
+ power-key {
+ linux,keycodes = <KEY_POWER>;
+ wakeup-source;
+ };
+
+ home {
+ linux,keycodes = <KEY_HOME>;
+ };
+ };
};
&scp {
--
2.50.1
