Re: pinctrl-icelake: driver writes to wrong offsets?

[Mika Westerberg]

On Fri, Sep 14, 2018 at 05:18:34PM -0700, Rajat Jain wrote:
> This is to report what I think is a problem in the pinctrl-icelake
> driver. It seems that when trying to control GPIO pins GPP_A* and
> GPIO_B*, the driver ends up writing to incorrect PADCFG registers.
> I've reached this conclusion by putting debug prints in the driver,
> although this can be seen by the following commands too. Please let me
> know if something is wrong in my experiments. For example, when trying
> to control GPP_B8/ISH_I2C1_SCL, the driver ends up writing to
> GPP_A6/ESPI_RESETB registers.

Hmm, when you add debug prints to the driver and you access GPIO 224
(GPP_B8/ISH_I2C1_SCL) from userspace you can see that the driver
actually uses PADCFG registers of GPP_A6/ESPI_RESETB? So that it is not
just a side-effect of how the pins are wired on your board.