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