Re: [PATCH 3/6] dt-bindings: clk: r9a07g044-cpg: Add entry for P0_DIV2 core clock

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Hi Prabhakar,

Thanks for your patch!

On Thu, Jul 15, 2021 at 8:21 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
> Add P0_DIV2 core clock required for CANFD module. CANFD core clock is
> sourced from P0_DIV2 referenced from HW manual Rev.0.50.

OK.

> Also add R9A07G044_LAST_CORE_CLK entry to avoid changes in
> r9a07g044-cpg.c file.

I'm not so fond of adding this.  Unlike the other definitions, it is
not really part of the bindings, but merely a convenience definition
for the driver.  Furthermore it has to change when a new definition
is ever added.

> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
>  include/dt-bindings/clock/r9a07g044-cpg.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/include/dt-bindings/clock/r9a07g044-cpg.h b/include/dt-bindings/clock/r9a07g044-cpg.h
> index 0728ad07ff7a..2fd20db0b2f4 100644
> --- a/include/dt-bindings/clock/r9a07g044-cpg.h
> +++ b/include/dt-bindings/clock/r9a07g044-cpg.h
> @@ -30,6 +30,8 @@
>  #define R9A07G044_CLK_P2               19
>  #define R9A07G044_CLK_AT               20
>  #define R9A07G044_OSCCLK               21
> +#define R9A07G044_CLK_P0_DIV2          22
> +#define R9A07G044_LAST_CORE_CLK                23

Third issue: off-by-one error, it should be 22 ;-)

>
>  /* R9A07G044 Module Clocks */
>  #define R9A07G044_CA55_SCLK            0

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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



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