[PATCH 08/17] i3c: renesas: Clean DATBAS register on detach

[Frank Li]

On Fri, May 22, 2026 at 01:18:06PM +0300, Claudiu Beznea wrote:
> From: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
>
> The controller uses DATBAS registers on TX/RX logic. Clean the DATBAS
> register for the detached I3C device to avoid issues.
>
> Fixes: d028219a9f14 ("i3c: master: Add basic driver for the Renesas I3C controller")
> Cc: stable at vger.kernel.org
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
> ---

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

>  drivers/i3c/master/renesas-i3c.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/i3c/master/renesas-i3c.c b/drivers/i3c/master/renesas-i3c.c
> index c009d0de6a2b..d32646deb69f 100644
> --- a/drivers/i3c/master/renesas-i3c.c
> +++ b/drivers/i3c/master/renesas-i3c.c
> @@ -922,6 +922,8 @@ static void renesas_i3c_detach_i3c_dev(struct i3c_dev_desc *dev)
>  	struct i3c_master_controller *m = i3c_dev_get_master(dev);
>  	struct renesas_i3c *i3c = to_renesas_i3c(m);
>
> +	renesas_writel(i3c->regs, DATBAS(data->index), 0);
> +
>  	i3c_dev_set_master_data(dev, NULL);
>  	i3c->addrs[data->index] = 0;
>  	i3c->free_pos |= BIT(data->index);
> --
> 2.43.0
>