Re: [PATCH] ARM: tegra: paz00: configure WiFi rfkill switch through device tree

[Marc Dietrich <marvin24@gmx.de>]

Hi Dmitry,

On Sat, 14 Feb 2026, Marc Dietrich wrote:

> Hi Dmitry,
>
> On Fri, 13 Feb 2026, Dmitry Torokhov wrote:
>
>> As of d64c732dfc9e ("net: rfkill: gpio: add DT support") rfkill-gpio
>> device can be instantiated via device tree.
>> 
>> Add the declaration there and drop board-paz00.c file and relevant
>> Makefile fragments.
>> 
>> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
>> ---
>> 
>> This is not tested on real hardware, compile tested only...
>> 
>> arch/arm/boot/dts/nvidia/tegra20-paz00.dts |  8 ++++
>> arch/arm/mach-tegra/Makefile               |  2 -
>> arch/arm/mach-tegra/board-paz00.c          | 56 ----------------------
>> arch/arm/mach-tegra/board.h                |  2 -
>> arch/arm/mach-tegra/tegra.c                |  4 --
>> 5 files changed, 8 insertions(+), 64 deletions(-)
>> 
>> diff --git a/arch/arm/boot/dts/nvidia/tegra20-paz00.dts 
>> b/arch/arm/boot/dts/nvidia/tegra20-paz00.dts
>> index 1408e1e00759..d1093ad569e6 100644
>> --- a/arch/arm/boot/dts/nvidia/tegra20-paz00.dts
>> +++ b/arch/arm/boot/dts/nvidia/tegra20-paz00.dts
>> @@ -706,6 +706,14 @@ vdd_pnl_reg: regulator-3v0 {
>> 		enable-active-high;
>> 	};
>> 
>> +	rfkill {
>> +		compatible = "rfkill-gpio";
>> +		label = "wifi_rfkill";
>> +		radio-type = "wlan";
>> +		reset-gpios = <&gpio TEGRA_GPIO(D, 1) GPIO_ACTIVE_HIGH>;
>
> I guess this can be removed, as it should trigger the LED, which is already 
> included elsewhere ....
>
>> +		shutdown-gpios = <&gpio TEGRA_GPIO(K, 5) GPIO_ACTIVE_HIGH>;
>> +	};
>> +
>> 	sound {
>> 		compatible = "nvidia,tegra-audio-alc5632-paz00",
>> 			"nvidia,tegra-audio-alc5632";
>
> I'll give it a try and report back.

rfkill (and LED) works as expected. With the reset-gpio line mentioned 
above removed, you can add my Tested-By.

Thanks!

Marc