Re: [PATCH v4 4/5] clk: renesas: Extract RZ/V2H PLL calculation helpers into shared library

[Geert Uytterhoeven]

On Thu, 18 Jun 2026 at 20:19, Prabhakar <prabhakar.csengg@xxxxxxxxx> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Move the RZ/V2H PLL and divider parameter calculation helpers from
> rzv2h-cpg.c into a new reusable library.
>
> Introduce the CLK_RZV2H_CPG_LIB Kconfig symbol and add
> rzv2h-cpg-lib.c to host the PLL parameter search algorithms currently
> implemented by rzv2h_get_pll_pars() and rzv2h_get_pll_divs_pars().
> Export the helpers as rzv2h_cpg_get_pll_pars() and
> rzv2h_cpg_get_pll_divs_pars() for use by other drivers.
>
> Update the public clock header to expose the new interfaces and provide
> compatibility aliases for the existing helper names, avoiding build
> breakage for current users while allowing future conversions to the new
> API.
>
> This prepares for reuse of the PLL and divider calculation logic by
> other Renesas clock drivers, including upcoming RZ/T2H and RZ/N2H CPG
> support, without duplicating the implementation.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> ---
> v3->v4:
> - Added macros for rzv2h_get_pll_pars and rzv2h_get_pll_divs_pars

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-clk for v7.3.

Gr{oetje,eeting}s,

                        Geert

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

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