GPIO Driver for Skylake-Y PCH

[Andy Shevchenko]

On Mon, Jun 17, 2019 at 05:00:54PM -0700, Alexander Ivanov wrote:
> On Mon, 17 Jun 2019 09:39 -07:00, Andy Shevchenko <andriy.shevchenko at linux.intel.com> wrote:
> > 
> > How come that this device is GPIO?
> > I mean what makes you, guys, to come to this conclusion?
> > 
> 
> Intel document 332996-002EN [1] chapter 28 says GPP_* groups are accessible through the PCH Sideband Interface, while 332690-004EN [2] defines P2SB at d31.f1 
> 
> Obviously, I am wrong here. However, the question stands, is there linux kernel support for Intel PCH GPIO?

Yes. Most of the SoCs from Intel use GPIO IP based on Chassis specification,
the drivers for which are available under drivers/pinctrl/intel. What you are
looking for is located under PINCTRL_SUNRISEPOINT configuration option.

> [1] http://www.intel.cn/content/dam/www/public/us/en/documents/datasheets/6th-gen-core-pch-u-y-io-datasheet-vol-2.pdf
> [2] https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/100-series-chipset-datasheet-vol-1.pdf

-- 
With Best Regards,
Andy Shevchenko