linux-kernel - Re: [PATCH v1 03/17] pinctrl: cy8c95x0: Allow most of the registers to be cached

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Message-ID: <CAHp75VcbucZ_3+bvJCsLk78D6egwckN=rMAdttmVwt8H9MfCSw@mail.gmail.com>
Date:   Mon, 5 Sep 2022 16:37:17 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Patrick Rudolph <patrick.rudolph@...ements.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 03/17] pinctrl: cy8c95x0: Allow most of the registers
 to be cached

On Mon, Sep 5, 2022 at 4:34 PM Linus Walleij <linus.walleij@...aro.org> wrote:
> On Mon, Sep 5, 2022 at 2:57 PM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
> > On Fri, Sep 02, 2022 at 09:42:00PM +0300, Andy Shevchenko wrote:
> > > On Fri, Sep 2, 2022 at 9:36 PM Andy Shevchenko
> > > <andriy.shevchenko@...ux.intel.com> wrote:
> > > >
> > > > It's unclear why many of static registers were marked as volatile.
> > >
> > > the static (yeah, forgot it)
> > >
> > > > They are pretty much bidirectional and static in a sense that
> > > > written value is kept there until a new write or chip reset.
> > > > Drop those registers from the list to allow them to be cached.
> > >
> > > This patch is not correct due to indexing access. It's sneaked since I
> > > forgot I added it into my main repo. The proper approach should be to
> > > create virtual registers and decode them before use. This allows to
> > > cache all ports and as a benefit to debug print all port actual
> > > statuses.
> >
> > To be clear: With this one removed from the bunch the rest can be applied w.o.
> > any change.
>
> I'll give Patrick a day or two to test/review and then I'll just apply
> them all except this one, they are all pretty self-evident

Sure!

> except ACPI
> things which have obviously been tested on hardware

Yes, I have a Galileo Gen 1 board which has been used for testing.

>  so from my
> point of view it's good to merge.

Thanks!

-- 
With Best Regards,
Andy Shevchenko