RE: [PATCH v2 4/4] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay to 1 msec

[Biju Das]

Hi Hugo,

> -----Original Message-----
> From: Hugo Villeneuve <hugo@xxxxxxxxxxx>
> Sent: 23 March 2026 14:20
> Subject: Re: [PATCH v2 4/4] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay to 1 msec
> 
> Hi Biju,
> 
> On Thu, 19 Mar 2026 16:48:28 +0000
> Biju <biju.das.au@xxxxxxxxx> wrote:
> 
> > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> >
> > The RZ/G2L hardware manual (Rev. 1.50, May 2025), Section 34.4.2.1,
> > requires waiting more than 1 msec after deasserting the CMN_RSTB
> > signal before the DSI-Tx module is ready. Increase the delay from 1
> > usec to
> > 1 msec by replacing udelay(1) with fsleep(1000).
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> 
> In your first submission, I commented that "...this should be backported to stable branches (missing
> Fixes / Cc: stable tags)?" and you answered with "Agreed, will add fixes/stable tags".
> 
> If you still agree, this patch should be #3 in your list, so that it is easier/straightforward to
> backport to stable branches.

The patch order is changed. that is the reason I have not added any fixes/stable tags.

The if check in patch#3 makes it is not backportable to stable branches.

If I reorder this to patch#3 it is fixing just the delay mentioned in the hardware manual.

Cheers,
Biju