[PATCH 06/17] i3c: renesas: Reset the controller on resume

[Frank Li]

On Fri, May 22, 2026 at 01:18:04PM +0300, Claudiu Beznea wrote:
> From: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
>
> Reset the controller on resume after enabling the clocks to follow the
> same sequence as in probe and avoid potential ordering related failures.
>
> Fixes: e7218986319b ("i3c: renesas: Add suspend/resume support")
> Cc: stable at vger.kernel.org
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
> ---

Can you move these similar stuff to one helper function to avoid duplicate
efforts later?

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>  drivers/i3c/master/renesas-i3c.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c
> index 5174a390d668..2f3c6ddf75c0 100644
> --- a/drivers/i3c/master/renesas-i3c.c
> +++ b/drivers/i3c/master/renesas-i3c.c
> @@ -1464,6 +1464,10 @@ static int renesas_i3c_resume_noirq(struct device *dev)
>  	if (ret)
>  		goto err_presetn;
>
> +	ret = renesas_i3c_reset(i3c);
> +	if (ret)
> +		goto err_clks_disable;
> +
>  	/* Re-store I3C registers value. */
>  	renesas_writel(i3c->regs, STDBR, i3c->i3c_STDBR);
>  	renesas_writel(i3c->regs, EXTBR, i3c->extbr);
> @@ -1483,6 +1487,8 @@ static int renesas_i3c_resume_noirq(struct device *dev)
>
>  	return 0;
>
> +err_clks_disable:
> +	clk_bulk_disable(i3c->num_clks, i3c->clks);
>  err_presetn:
>  	reset_control_assert(i3c->presetn);
>  err_tresetn:
> --
> 2.43.0
>