[PATCH RESEND] arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T

[PATCH RESEND] arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T

[Aleksander Jan Bajkowski]

This patch adds support for keys and LEDs on the Xiaomi AX3000T.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
 .../dts/mediatek/mt7981b-xiaomi-ax3000t.dts   | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts b/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts
index a314c3e05e50..db399cb3ead7 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts
@@ -1,6 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only OR MIT
 
 /dts-v1/;
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 
 #include "mt7981b.dtsi"
 
@@ -12,4 +15,37 @@ memory@40000000 {
 		reg = <0 0x40000000 0 0x10000000>;
 		device_type = "memory";
 	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		key-mesh {
+			label = "MESH";
+			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_9>;
+			linux,input-type = <EV_SW>;
+		};
+
+		key-reset {
+			label = "RESET";
+			gpios = <&pio 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&pio 9 GPIO_ACTIVE_LOW>;
+		};
+
+		led-1 {
+			color = <LED_COLOR_ID_YELLOW>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&pio 10 GPIO_ACTIVE_LOW>;
+		};
+	};
 };
-- 
2.53.0

Re: [PATCH RESEND] arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] The `key-mesh` node incorrectly pairs `linux,code = <BTN_9>` with `linux,input-type = <EV_SW>`. Since `BTN_9` (265) exceeds `SW_MAX`, the input subsystem rejects the capability, causing a kernel error splat on boot and rendering the button completely non-functional.
--

commit b3e6ab558b15225bf59d262cc68b446d232036a9
Author: Aleksander Jan Bajkowski <olek2@wp.pl>

arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T

This commit adds device tree support for the physical buttons and
status LEDs present on the Xiaomi AX3000T router.

> diff --git a/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts b/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts
> index a314c3e05e500..db399cb3ead73 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7981b-xiaomi-ax3000t.dts

[ ... ]

> @@ -12,4 +15,37 @@ memory@40000000 {
>  		reg = <0 0x40000000 0 0x10000000>;
>  		device_type = "memory";
>  	};
> +
> +	keys {
> +		compatible = "gpio-keys";
> +
> +		key-mesh {
> +			label = "MESH";
> +			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
> +			linux,code = <BTN_9>;
> +			linux,input-type = <EV_SW>;

[Severity: Medium]
Will this combination of EV_SW and BTN_9 cause a capability rejection
during boot?

During the gpio-keys driver probe, input_set_capability() is called to
register the button capability. This function strictly bounds-checks the
event code against the maximum for the given type.

For EV_SW, input_max_code is SW_MAX (17). Since BTN_9 (265) exceeds SW_MAX,
the check fails, causing the kernel to print an error splat and return
early without registering the switch capability.

Does this leave the mesh button completely non-functional when pressed?

> +		};
> +
> +		key-reset {

[ ... ]

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260523101904.293215-1-olek2@wp.pl?part=1

Re: [PATCH RESEND] arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T

[AngeloGioacchino Del Regno]

On Sat, 23 May 2026 12:18:55 +0200, Aleksander Jan Bajkowski wrote:
> This patch adds support for keys and LEDs on the Xiaomi AX3000T.

Applied to v7.1-next/dts64, thanks!

[1/1] arm64: dts: mediatek: add LED and key support on Xiaomi AX3000T
      commit: 9897c586b09f79ebcf2e67a888743c046b20d254

Cheers,
Angelo