Thread (43 messages) 43 messages, 5 authors, 2022-08-09

Re: imx8mm lcdif->dsi->adv7535 no video, no errors

From: Adam Ford <hidden>
Date: 2022-08-02 02:29:57
Also in: dri-devel, lkml

On Mon, Aug 1, 2022 at 8:53 PM Fabio Estevam [off-list ref] wrote:
On Mon, Aug 1, 2022 at 10:39 PM Adam Ford [off-list ref] wrote:
quoted
I managed to get my HDMI output working. I had the lanes set to 2
instead of 4.  Once I switched to 4-lanes, the monitor came up in
1080p.  I haven't yet been able to get other modes to work.
Ok, good. On another thread, you mentioned that you were also trying
to get LVDS to work via SN65DSI83.

Does LVDS work for you on this branch?
I haven't tried with Marek's latest suggestion.  In the other thread
he mentioned a burst mode and setting the DSI speeds to higher
frequencies, but the patch he had didn't look like it would apply
cleanly, so I will need to dig into that a bit further.  Since my
company doesn't really ship the LVDS displays with the kits, the HDMI
is the default video, so I've been focusing on it.

To answer Marco's question, I was able to revert "MLK-21958-13:
drm/bridge: adv7511: Limit supported clocks" and still get a display
at 1080p, but all the other resolutions I tried appear to come up
blank.  I didn't try every one.  With that revert, more options come
available, but 1440x900 and 800x600 were options I tried
unsuccessfullyl.

adam

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help