Re: [PATCH] drm/panel-simple: fix connector type for LogicPD Type28 Display

From: Tomi Valkeinen
Date: Tue Jun 16 2020 - 08:31:02 EST


On 15/06/2020 17:53, Adam Ford wrote:
On Mon, Jun 15, 2020 at 9:46 AM Fabio Estevam <festevam@xxxxxxxxx> wrote:

On Mon, Jun 15, 2020 at 10:19 AM Adam Ford <aford173@xxxxxxxxx> wrote:

The LogicPD Type28 display used by several Logic PD products has not
worked since v5.5.

Maybe you could tell which commit exactly and then put a Fixes tag?

I honestly don't know. I reached out to the omap mailing list,
because I noted this issue. Tomi V from TI responded with a link that
he posted which fixes this for another display.

https://www.mail-archive.com/dri-devel@xxxxxxxxxxxxxxxxxxxxx/msg312208.html

I tested that patch and it worked for a different LCD, so I did the
same thing to the Logic PD Type 28 display as well.

My patch and commit message were modeled after his, and his commit
CC's stable with a note about being required for v5.5+

I added him to the CC list, so maybe he knows which hash needs to be
referenced from a fixes tag. I was hoping to not have to go back and
bisect if it's not required, but I will if necessary.

No, I didn't check when exactly it broke. connector_type was added in v5.5, and my patch applies to v5.5, so I set that as stable version. But the WARN comes from panel bridge. Possibly 89958b7cd9555a5d82556cc9a1f4c62fffda6f96 is the one that adds requirement to have connector_type.

Tomi

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