linux-kernel - RE: [PATCH v3 0/2] drm: rcar-du: rzg2l_mipi

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Message-ID:
 <TY3PR01MB1134675403AF1DFADD1A3B25D8699A@TY3PR01MB11346.jpnprd01.prod.outlook.com>
Date: Thu, 22 May 2025 19:26:12 +0000
From: Biju Das <biju.das.jz@...renesas.com>
To: Hugo Villeneuve <hugo@...ovil.com>
CC: "maarten.lankhorst@...ux.intel.com" <maarten.lankhorst@...ux.intel.com>,
	"mripard@...nel.org" <mripard@...nel.org>, "tzimmermann@...e.de"
	<tzimmermann@...e.de>, "airlied@...il.com" <airlied@...il.com>,
	"simona@...ll.ch" <simona@...ll.ch>, Chris Brandt <Chris.Brandt@...esas.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Hugo
 Villeneuve <hvilleneuve@...onoff.com>
Subject: RE: [PATCH v3 0/2] drm: rcar-du: rzg2l_mipi_dsi: add MIPI DSI command
 support

Hi Hugo,

> -----Original Message-----
> From: Hugo Villeneuve <hugo@...ovil.com>
> Sent: 22 May 2025 20:14
> Subject: Re: [PATCH v3 0/2] drm: rcar-du: rzg2l_mipi_dsi: add MIPI DSI command support
> 
> On Thu, 22 May 2025 18:40:29 +0000
> Biju Das <biju.das.jz@...renesas.com> wrote:
> 
> > Hi Hugo,
> >
> > Thanks for the patch.
> >
> > > -----Original Message-----
> > > From: Hugo Villeneuve <hugo@...ovil.com>
> > > Sent: 22 May 2025 15:39
> > > Subject: [PATCH v3 0/2] drm: rcar-du: rzg2l_mipi_dsi: add MIPI DSI
> > > command support
> > >
> > > From: Hugo Villeneuve <hvilleneuve@...onoff.com>
> > >
> > > Hello,
> > > this patch series add support for sending MIPI DSI command packets
> > > to the Renesas RZ/G2L MIPI DSI driver.
> > >
> > > Tested on a custom board with a SolidRun RZ/G2L SOM, with two
> > > different LCD panels using the jd9365da and st7703 drivers.
> > >
> > > Tested short and long writes.
> > >
> > > Tested read of 1 byte, 2 bytes and long reads.
> >
> > I see tested-by tag for patch[1] and this patch series is conflict with that patch.
> 
> Hi Biju,
> there is no conflict per se for the moment, as these are two separate submissions. Chris's patch is
> not part of this submission.
> 
> I tested patch[1] by rebasing my series on top of Chris patch.
> 
> > Can this patch series work without patch[1]? If yes, no issue.
> 
> Yes it can.
> 
> 
> > Otherwise, you need to rebase your patch on top of [1] to avoid merge conflict.
> 
> Eventually, if Chris's patch is accepted before my series, I will rebase and resubmit then. Right now,
> it seems I cannot do it, because submitting my serie based on an "not yet accepted" patch will result
> in the kernel test robot complaining (and rightly so). Unless there is a mean to specify that my serie
> depends on other unapplied patch...
> 
> Ideally, it should have been easier if I could have integrated Chris's patch into my serie, but he
> preferred to send his patch alone since he felt that it could be accepted more rapidly like this.

OK, I have added your patch + Chris's patch and tested with ADV7535 connected to display.
But the display is unstable. I need to figure out which patch is causing the issue.

Cheers,
Biju