linux-kernel - Re: [PATCH 03/10] spi: rzv2m-csi: Rework CSI_CKS

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Message-ID: <CAMuHMdUB8g3jhGh7SJvv5OxfsHvHqRE=ANuPAHDxbS6tyTMcsg@mail.gmail.com>
Date:   Mon, 17 Jul 2023 11:27:07 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Fabrizio Castro <fabrizio.castro.jz@...esas.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Chris Paterson <Chris.Paterson2@...esas.com>,
        Biju Das <biju.das@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH 03/10] spi: rzv2m-csi: Rework CSI_CKS_MAX definition

On Sat, Jul 15, 2023 at 3:04 AM Fabrizio Castro
<fabrizio.castro.jz@...esas.com> wrote:
> Clock "csiclk" gets divided by 2 * CSI_CLKSEL_CKS in order to generate
> the serial clock (output from master), with CSI_CLKSEL_CKS ranging from
> 0x1 (that means "csiclk" is divided by 2) to 0x3FFF ("csiclk" is divided
> by 32766). CSI_CKS_MAX is used for referring to the setting
> corresponding to the maximum frequency divider.
> Value 0x3FFF for CSI_CKS_MAX doesn't really means much to the reader
> without an explanation and a more readable definition.
>
> Add a comment with a meaningful description and also replace value
> 0x3FFF with the corresponding GENMASK, to make it very clear what the
> macro means.
>
> Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>

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