Re: [PATCH 1/3] dt-bindings: leds: rt8515: Support single-GPIO flash ICs with unlock gate

[Rudraksha Gupta]

On 3/8/26 16:20, Linus Walleij wrote:
> Hi Rudraksha,
>
> thanks for your patch!
>
> On Sat, Mar 7, 2026 at 1:58 AM Rudraksha Gupta via B4 Relay
> <devnull+guptarud.gmail.com@xxxxxxxxxx> wrote:
>
> >     ent-gpios:
> >       maxItems: 1
> >       description: A connection to the 'ENT' (enable torch) pin.
> > +      Optional for single-GPIO flash ICs where enf-gpios is used for
> > +      both flash and torch modes.
> Fair enough, that can be done.
>
> > +  unlock-gpios:
> > +    maxItems: 1
> > +    description: Optional GPIO to unlock the flash LED circuit. Some
> > +      boards use a PMIC MPP pin that must be driven high before the
> > +      flash IC will respond to the enable GPIOs.
> But this IC has no pin named "unlock". This is something else.
>
> Given the way it works it looks like a regulator enable signal.
>
> If you don't have any better idea about what this is, I would
> suggest adding
>
> vin-supply
>
> to the RT8615 bindings instead and then use a GPIO regulator
> in your device tree to provide the voltage to it from that GPIO.

Hello Linus,

Thanks for your comments (both in this email and others)! I have 
addressed these in v2.

Rudraksha


> Yours,
> Linus Walleij