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@collabora.com>
Signed-off-by: Julien Massot <julien.massot@collabora.com>
---
 .../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 {

-- 
2.51.0

On 05/09/2025 13:51, Julien Massot wrote:
> 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@collabora.com>
> Signed-off-by: Julien Massot <julien.massot@collabora.com>

Queued, thanks.
Matthias

> ---
>   .../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 {
>