[PATCH v3 2/2] net: dsa: mt7530: Use GPIO polarity to generate correct reset sequence

[Vladimir Oltean]

On Thu, Dec 04, 2025 at 01:50:52PM +0000, Daniel Golle wrote:
> On Thu, Dec 04, 2025 at 03:16:26PM +0200, Vladimir Oltean wrote:
> > If this is blocking progress for new device trees, can we just construct,
> > using of_machine_is_compatible(), a list of all boards where the device
> > tree defines incorrect reset polarity that shouldn't be trusted by the
> > driver when driving the reset GPIO? If we do this, we can also leave
> > those existing device trees alone.
> 
> From OpenWrt's point of view this would be kind of ugly as we would either
> have to extend the list of affected boards downstream, or fix the polarity
> in some but not all of our downstream DTS files.

Including the downstream-only boards, how many compatibles are we
talking about? If we patched mainline to cover all, are you confident
that it would be an exhaustive solution?

> I'd prefer to rather have the option to force the "wrong" GPIO
> polarity for theoretical future boards with that (very unlikely to
> ever exist) NOT gate between the SoC GPIO and switch reset line. That
> would allow to gradually update boards to reflect the physical reality
> and yet the driver would not break if the GPIO polarity is stated
> wrongly.

I didn't get that from this thread - how would you prefer having this
option implemented exactly?