Re: [PATCH 0/2] pinctrl: stm32: add suspend/resume management

[Alexandre Torgue]

Hi Linus

On 5/24/19 1:24 PM, Linus Walleij wrote:
> On Fri, May 10, 2019 at 9:42 AM Alexandre Torgue
> <alexandre.torgue@xxxxxx> wrote:
>
> > During power sequence, GPIO hardware registers could be lost if the power
> > supply is switched off. Each device using pinctrl API is in charge of
> > managing pins during suspend/resume sequences. But for pins used as gpio or
> > irq stm32 pinctrl driver has to save the hardware configuration.
> > Each register will be saved at runtime and restored during resume sequence.
>
> Both patches applied.
>
> On the same pinctrl devel branch is also Benjamin's patches to support
> the "link_consumers" property on the pin controller descriptor to
> enable links from pin control consumers back to their pin controller
> suppliers, especially important for STMFX.
>
> Would you please check if it work fine if you turn on this feature
> for the SoC STM32 pin controller?

I just tested with Benjamin's patches and set "link_consumers" property 
for STM32 pinctrl. No changes on boot (except extra logs for each probe) 
and no changes on power tests too.

regards
alex

> I am working a bit on refining the patches, so I want to enable testing
> with some SoC pin controllers as well and possibly make the
> behavior default.
>
> Yours,
> Linus Walleij