linux-kernel - Re: [PATCH 1/2] pinctrl: renesas: rzg2l: Introduce single macro for digital noise filter configuration

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Message-ID: <CA+V-a8uU2UfhB7JhSKOuOQrOxaGtyuKAMWW-ZC+xDrfYRpHekA@mail.gmail.com>
Date: Thu, 29 Aug 2024 20:15:24 +0100
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, linux-renesas-soc@...r.kernel.org, 
	linux-gpio@...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 1/2] pinctrl: renesas: rzg2l: Introduce single macro for
 digital noise filter configuration

Hi Geert,

Thank you for the review.

On Thu, Aug 29, 2024 at 2:09 PM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> Thanks for your patch!
>
> On Tue, Aug 27, 2024 at 3:17 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
> > From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> >
> > When enabling the digital noise filter for the pins, it is necessary to
> > configure both the noise filter stages (via the FILNUM register) and the
> > sampling interval (via the FILCLKSEL register). To simplify this process,
> > we introduce a single macro for configuring the digital noise filter.
>
> Currently the pin control tables just declare which pins support
> digital noise filter configuration, but the driver does not support
> configuring the digital noise filters yet, right?
>
Yes that's right.

> So I'd reword the paragraph above to something like:
>
>     Support for enabling the digital noise filter, and support for
>     configuring the noise filter stages (via the FILNUM register) and the
>     sampling interval (via the FILCLKSEL register) are related: a pin
>     supports either all or none of them.  Hence simplify declaring digital
>     noise filter support for a pin by using a single feature flag instead of
>     three separate flags.
>
Ok, I'll update the commit description as above.

Cheers,
Prabhakar

> > This patch removes the PIN_CFG_FILNUM and PIN_CFG_FILCLKSEL configuration
> > macros and renames PIN_CFG_FILONOFF to PIN_CFG_NF.
> >
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> For the actual patch contents:
> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
>
> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds