[Letux-kernel] module_mipi_dsi_driver panel with omapdrm?

H. Nikolaus Schaller hns at goldelico.com
Wed Aug 5 13:49:07 CEST 2020


> Am 05.08.2020 um 13:28 schrieb Sebastian Reichel <sebastian.reichel at collabora.com>:
> Hi,
> On Wed, Aug 05, 2020 at 11:19:20AM +0200, H. Nikolaus Schaller wrote:
>> What I do not yet understand is how Laurent's patch should be able
>> to break it.
> omapdrm will not probe successfully if any DT enabled component
> does not probe correctly. Since the patch you identified touched
> HDMI and VENC and you are probably using HDMI, I suggest looking
> there first.

Yes, that is a very good explanation.

Maybe there is a subtle change in how the HDMI connector has to be defined
which is missing in our (private) DTB. Maybe the OMAP5-uEVM DTS gives a hint.

A quick check shows last hdmi specific change for omap5-board-common or uevm
was in 2017 but I may have missed something.

There are 715a5a978733f0 and 671ab615bd507f which arrived in v5.7-rc1 as well
and are related to hdmi clocks. So this may be (or not) and influencing factor.

BR and thanks,

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