Re: [PATCH 1/4] dt-bindings: iio: light: stk33xx: add power supply support

[Roman Vivchar]

Hi Jonathan,

On Sunday, November 8th, 2026 at 12:36 AM, Jonathan Cameron <jic23@xxxxxxxxxx> wrote:

> On Sun, 08 Nov 2026 00:15:03 +0200
> Roman Vivchar via B4 Relay <devnull+rva333.protonmail.com@xxxxxxxxxx> wrote:
> 
> > From: Roman Vivchar <rva333@xxxxxxxxxxxxxx>
> >
> > On some boards, the chip shares a power rail with other components. If
> > that rail is turned off, the chip can't function.
> Not sure how the sharing is relevant.  Even if shared with nothing
> else we need to turn it on.  So just mention that on some boards it
> isn't always on.
> 
> The only reason this would be optional in the binding is if there
> was internal routing in some packaging or similar that meant there
> was no pin to connect.
>
> Upshot, make this required in the binding. Note that doesn't mean
> the driver must require it - we are simply documenting that the
> device needs power.
> 

I agree this should be required, but that would break dt_binding_check
for existing boards. I don't have their schematic nor boards themselves
to verify the regulator for the power supply.

Best regards,
Roman