On Tue, Apr 14, 2020 at 08:17:52PM +0300, Andy Shevchenko wrote:
> On Thu, Apr 09, 2020 at 02:58:28PM -0500, Pierre-Louis Bossart wrote:

> > +		GPIO_LOOKUP("pcm512x-gpio", 3, "PCM512x-GPIO4", GPIO_ACTIVE_HIGH),

> It says GPIO 4 and here is number 3.
> Does this 4 come from hardware documentation?

Yes, the first GPIO in the device is GPIO1.