On 7/11/2017 00:09, Andy Shevchenko wrote:

On Thu, 2017-11-02 at 10:40 +0800, Phil Reid wrote:

quoted

From: Tim Sander <redacted>

This patch contains much input from Phil Reid and has been tested
on Intel/Altera Cyclone V SOC Hardware with Altera GPIO's for the
SCL and SDA GPIO's.

Acked-by: Jarkko Nikula <redacted>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Shame on me, I totally forgot one important comment on all this.

How do we switch pinctrl back to the native function? Is it guaranteed
by pinctrl framework and all underneath drivers?

G'day Andy,

That is a good question. I don't have an understanding of how the pinctrl
framework works with respect to requesting gpios.
My device (Intel / Altera Cyclone V SOC) doesn't have a pinctrl for the i2c / gpio mux as
yet. It's all setup by the bootloader and they don't expect you to change it.
I'm using two separate GPIO's "wired" to the i2c bus via the SOC FPGA for the recovery.
Tim was doing the same.

-- 
Regards
Phil Reid