Messages in this thread | | | Subject | Re: [PATCH 0/2] pinctrl: stm32: add suspend/resume management | From | Alexandre Torgue <> | Date | Mon, 27 May 2019 18:17:20 +0200 |
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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@st.com> 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 >
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