linux-kernel - Re: [PATCH 2/3] pinctrl: renesas: rzg2l: Add support for configuring open-drain outputs

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Message-ID: <CA+V-a8uF2Ajh-X27_tqpT1VK_bzxOJbFQNhkXsfcGNkz9aX4Dw@mail.gmail.com>
Date: Fri, 4 Oct 2024 12:47:38 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Magnus Damm <magnus.damm@...il.com>, linux-renesas-soc@...r.kernel.org, 
	linux-gpio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH 2/3] pinctrl: renesas: rzg2l: Add support for configuring
 open-drain outputs

Hi Geert,

Thank you for the review.

On Fri, Oct 4, 2024 at 8:56 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Wed, Sep 18, 2024 at 2:09 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > Add support for configuring the multiplexed pins as open-drain outputs.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> Thanks for your patch!
>
> > --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> > +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
>
> > @@ -1466,6 +1477,13 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
> >                         rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
> >                         break;
> >
> > +               case PIN_CONFIG_DRIVE_OPEN_DRAIN:
> > +                       if (!(cfg & PIN_CFG_NOD))
> > +                               return -EINVAL;
> > +
> > +                       rzg2l_rmw_pin_config(pctrl, NOD(off), bit, NOD_MASK, 1);
> > +                       break;
> > +
>
> I think you also need a case for PIN_CONFIG_DRIVE_PUSH_PULL,
> so you can disable the NOD bit again.
>
Ok, I will implement PIN_CONFIG_DRIVE_PUSH_PULL to disable open drain
and send a v2.

Cheers,
Prabhakar