[PATCH v2 00/50] drm/omap: Replace custom display drivers with drm_bridge and drm_panel

[Tomi Valkeinen]

On 26/08/2019 16:51, Laurent Pinchart wrote:
> Hi Tomi,
> 
> On Mon, Aug 26, 2019 at 03:15:23PM +0300, Tomi Valkeinen wrote:
>> On 20/08/2019 04:16, Laurent Pinchart wrote:
>>
>>> The patches can be found at
>>>
>>> 	git://linuxtv.org/pinchartl/media.git omapdrm/bridge/devel
>>
>> I took your branch, booted AM5 EVM (I see you had the hack dts patch in your branch), and:
>>
>> insmod nfs/work/linux/drivers/media/cec/cec.ko
>> insmod nfs/work/linux/drivers/video/fbdev/core/cfbcopyarea.ko
>> insmod nfs/work/linux/drivers/video/fbdev/core/cfbimgblt.ko
>> insmod nfs/work/linux/drivers/video/fbdev/core/cfbfillrect.ko
>> insmod nfs/work/linux/drivers/gpu/drm/drm_panel_orientation_quirks.ko
>> insmod nfs/work/linux/drivers/gpu/drm/drm.ko
>> insmod nfs/work/linux/drivers/gpu/drm/drm_kms_helper.ko
>> insmod nfs/work/linux/drivers/gpu/drm/bridge/ti-tfp410.ko
>> insmod nfs/work/linux/drivers/gpu/drm/bridge/sii902x.ko
>> insmod nfs/work/linux/drivers/gpu/drm/bridge/tc358767.ko
>> insmod nfs/work/linux/drivers/gpu/drm/panel/panel-simple.ko
>> [   25.487002] panel-simple display: display supply power not found, using dummy regulator
>> [   25.495241] ------------[ cut here ]------------
>> [   25.499900] WARNING: CPU: 0 PID: 303 at drivers/gpu/drm/panel/panel-simple.c:378 panel_simple_probe+0x34c/0x3b4 [panel_simple]
> 
> How am I expected to sneak patches in if you test them ? :-)
> 
> This has been introduced by a recent rebase, and I've only tested the
> series on the pandaboard since then. It looks like the problem comes
> from
> 
> commit b8a2948fa2b3a5a6da67fd57aa01c7318d795125
> Author: Sean Paul <seanpaul at chromium.org>
> Date:   Thu Jul 11 13:34:53 2019 -0700
> 
>      drm/panel: simple: Add ability to override typical timing
> 
> which breaks our out-of-tree DT. As a short term fix I can simply drop
> the panel timings from DT, but I think this issue can affect more

So just removing the timings from the panel's node should be enough? 
Still crashing for me, although the panel warning goes away.

  Tomi

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