Re: [PATCH v3] wifi: ath9k: Obtain system GPIOS from descriptors

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On Thu, Mar 12, 2026 at 10:26:06PM +0100, Linus Walleij wrote:
> Hi Andy,
> 
> (I'll obviously fix all the syntax issues for v4)
> 
> On Thu, Mar 12, 2026 at 5:24 PM Andy Shevchenko
> <andriy.shevchenko@linux.intel.com> wrote:
> 
> > Have you considered using software nodes instead?
> 
> That's the big question. And also: have I considered adding device
> tree bindings to map to those look-ups, that would provide a way for
> new users of these devices to actually do the right thing. I thought of both!
> 
> The big problem is that we don't have a handle on the device
> and it's name, because it comes from the device tree and
> could be named anything. Same thing with the GPIO controller.
> 
> If we register lookups or software nodes in the GPIO driver we
> don't have a reference to the ath9k device or its name, and if we
> register it in the ath9k device, we don't have a handle on the
> GPIO controller or its name.
> 
> All of these GPIOs "should have" had bindings and "should have"
> been in the device tree, but they are not, and I think some of those
> device trees are even outside of the Linux kernel so we can't really
> fix them either :( it's a mess, I'm just stirring the mud to try and
> make it a bit better by removing the global GPIO numbers.

Thanks for this elaboration! Since Bart is the person who wants to move
the lookup tables to software nodes, I leave that part to him. For time
being your patch looks good (after addressing style and minor issues I
pointed out), feel free to add
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
to the next version.

-- 
With Best Regards,
Andy Shevchenko