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SubjectRe: [PATCH v2 1/2] clk: renesas: rzg2l: Don't assume all CPG_MOD clocks support PM
Hi Prabhakar,

On Wed, Oct 26, 2022 at 3:42 AM Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> There are cases where not all CPG_MOD clocks should be assumed to support
> PM. For example on the CRU block there is a particular sequence that needs
> to be followed to initialize the CSI-2 D-PHY in which individual clocks
> need to be turned ON/OFF, due to which Runtime PM support wasn't used by
> the CRU CSI-2 driver.
>
> This patch adds support to allow indicating if PM is not supported by the
> CPG_MOD clocks. Two new members no_pm_mod_clks and num_no_pm_mod_clks are
> added to struct rzg2l_cpg_info so that MOD clocks which do not support PM
> can be passed by no_pm_mod_clks[] array and when the driver uses Runtime
> PM support the clk ID is matched against the no_pm_mod_clks[] array to see
> if the clk is needed to be included as part of Runtime PM.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
> v1->v2
> * Dropped DEF_NO_PM() macro
> * Added genpd member to struct rzg2l_cpg_priv
> * Added no_pm_mod_clks and num_no_pm_mod_clks members
> to struct rzg2l_cpg_info
> * Updated commit message

Thanks for the update!

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c

>
> static int rzg2l_cpg_attach_dev(struct generic_pm_domain *unused, struct device *dev)

Time to rename "unused" to "domain" ;-)

> {
> + struct rzg2l_cpg_priv *priv = container_of(unused, struct rzg2l_cpg_priv, genpd);

I can fix that while applying...

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

Geert

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

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