linux-kernel - Re: [PATCH v2 8/8] pinctrl: stm32: Add STM32H750 MCU pinctrl support

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Date:   Mon, 29 Mar 2021 16:07:56 +0800
From:   dillon min <dillon.minfei@...il.com>
To:     Alexandre TORGUE <alexandre.torgue@...s.st.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Ahmad Fatoum <a.fatoum@...gutronix.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux@...linux.org.uk, Vladimir Murzin <vladimir.murzin@....com>,
        afzal.mohd.ma@...il.com
Subject: Re: [PATCH v2 8/8] pinctrl: stm32: Add STM32H750 MCU pinctrl support

On Mon, Mar 29, 2021 at 4:00 PM Alexandre TORGUE
<alexandre.torgue@...s.st.com> wrote:
>
> Hi Dillon
>
> On 3/12/21 7:24 AM, dillon.minfei@...il.com wrote:
> > From: dillon min <dillon.minfei@...il.com>
> >
> > This patch adds STM32H750 pinctrl and GPIO support
> > since stm32h750 has the same pin alternate functions
> > with stm32h743, so just reuse the stm32h743's pinctrl
> > driver
> >
> > Signed-off-by: dillon min <dillon.minfei@...il.com>
> > ---
> > v2:
> > - add compatible string st,stm32h750-pinctrl to pinctl-stm32h743.c as they
> >    have same pin alternate functions
> > - add STM32H750 to Kconfig description
> >
> >   drivers/pinctrl/stm32/Kconfig             | 2 +-
> >   drivers/pinctrl/stm32/pinctrl-stm32h743.c | 3 +++
> >   2 files changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/pinctrl/stm32/Kconfig b/drivers/pinctrl/stm32/Kconfig
> > index f36f29113370..fb1ffc94c57f 100644
> > --- a/drivers/pinctrl/stm32/Kconfig
> > +++ b/drivers/pinctrl/stm32/Kconfig
> > @@ -35,7 +35,7 @@ config PINCTRL_STM32F769
> >       select PINCTRL_STM32
> >
> >   config PINCTRL_STM32H743
> > -     bool "STMicroelectronics STM32H743 pin control" if COMPILE_TEST && !MACH_STM32H743
> > +     bool "STMicroelectronics STM32H743/STM32H750 pin control" if COMPILE_TEST && !MACH_STM32H743
> >       depends on OF && HAS_IOMEM
> >       default MACH_STM32H743
> >       select PINCTRL_STM32
> > diff --git a/drivers/pinctrl/stm32/pinctrl-stm32h743.c b/drivers/pinctrl/stm32/pinctrl-stm32h743.c
> > index ffe7b5271506..700206c7bc11 100644
> > --- a/drivers/pinctrl/stm32/pinctrl-stm32h743.c
> > +++ b/drivers/pinctrl/stm32/pinctrl-stm32h743.c
> > @@ -1966,6 +1966,9 @@ static const struct of_device_id stm32h743_pctrl_match[] = {
> >               .compatible = "st,stm32h743-pinctrl",
> >               .data = &stm32h743_match_data,
> >       },
> > +     {       .compatible = "st,stm32h750-pinctrl",
> > +             .data = &stm32h743_match_data,
> > +     },
>
> If you use exactly the same driver (i.e. same ball out and AF mux) then
> you don't have to create a new compatible for that. Just use the same
> than h743.(so you don't have to factorize DT files).
Okay, yes they are the total same ball out and AF mux. I will delete
it in the next submission.
 Just a kindly reminder , the newest version of this patchset is [PATCH v6].

Thanks.
>
> Regards
> Alex
>
> >       { }
> >   };
> >
> >