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

[Marc Dietrich]

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@xxxxxxxxx>
> > ---
> >
> > 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