Re: [PATCH] can: rcar_canfd: Change the initializing flow for clocks and resets

[Claudiu Beznea]

On 6/25/26 16:51, Biju wrote:
> From: Tu Nguyen<tu.nguyen.xg@xxxxxxxxxxx>
>
> Testing CANFD on RZ/G3E shows that many registers do not reset to their
> initial values with the current flow of deasserting resets first and then
> enabling clocks.
>
> Based on the HW manual, clocks should be supplied first and the
> resets deasserted afterward.
>
>   section 7.4.3 Procedure for Activating Modules: RZ/G2L
>   section 4.4.9.3 Procedure for Starting up Units: RZ/G3E
>
> So, update the order of the initializing flow for resets and clocks
> to match the hardware manual, resetting all CANFD registers to their
> initial values. Also update rcar_canfd_global_deinit() to assert
> resets before disabling clocks, so the teardown path mirrors the new
> init ordering.
>
> Fixes: 76e9353a80e9 ("can: rcar_canfd: Add support for RZ/G2L family")
> Signed-off-by: Tu Nguyen<tu.nguyen.xg@xxxxxxxxxxx>
> Signed-off-by: Biju Das<biju.das.jz@xxxxxxxxxxxxxx>

Tested-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>