Re: [PATCH v8 02/11] clk: renesas: rzg2l-cpg: Add support for critical resets

[Geert Uytterhoeven]

On Tue, 24 Mar 2026 at 12:43, Biju <biju.das.au@xxxxxxxxx> wrote:
> From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
>
> Some reset lines must remain deasserted at all times after boot, as
> asserting them would disable critical system functionality with no owning
> driver to restore them. This mirrors the existing crit_mod_clks mechanism
> which protects critical module clocks from being disabled.
>
> On RZ/G2L family SoCs, the DMA reset must be remain deasserted for routing
> some peripheral interrupts to CPU.
>
> Add crit_resets and num_crit_resets fields to struct rzg2l_cpg_info to
> allow SoC-specific data tables to declare reset IDs that must never be
> asserted.
>
> Introduce rzg2l_cpg_deassert_crit_resets() to iterate over all critical
> resets and deassert them. Call it both at probe time and during resume to
> ensure critical peripherals are held out of reset after power-on and
> suspend/resume cycles.
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Thanks, will queue in renesas-clk for v7.1.

Gr{oetje,eeting}s,

                        Geert

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

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when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds