Re: [PATCH v4] pinctrl: qcom: sc8180x: add ACPI probe support

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>]

On Wed, Mar 10, 2021 at 07:12:10PM +0800, Shawn Guo wrote:
> It adds ACPI probe support for pinctrl-sc8180x driver.  We have one
> problem with ACPI table, i.e. GIO0 (TLMM) block has one single memory
> resource to cover 3 tiles defined by SC8180X.  To follow the hardware
> layout of 3 tiles which is already supported DT probe, it adds one
> function to replace the original single memory resource with 3 named
> ones for tiles.  With that, We can map memory for ACPI in the same way
> as DT.

You are reinventing a wheel, i.e. MFD framework. Can you simple utilize
devm_mfd_add_devices()?

Basically you may write an new pure MFD driver (drivers/mfd) that will
instantiate properly the pin control driver.

-- 
With Best Regards,
Andy Shevchenko