Interfacing (DSI, CSI, I2C, etc.) • Re: Problem With High Resolutions With DSI Generic Overlay

I do not have a specific display, instead I have a DSI analyzer where it shows me the packets and frame if possible. Below is the correctly detected frame, for the dtparams above with its detected timings.

https://imgur.com/XiZkhfJ

https://imgur.com/N5yb3cF

For the 1920x1200 with dtparams mentioned above I have the following detected timings and unfortunately no captured frame

https://imgur.com/GXJBccT

So what timing are you using?
Provide your dtoverlay line so that we can replicate against our analyser.

Sure,

Below is a configuration that works correctly for 1280x800

Code:

dtoverlay=vc4-kms-dsi-genericdtparam=two-lane=1,hactive=1280dtparam=vactive=800dtparam=vfp=30,vbp=56,hfp=5,hbp=20dtparam=vsync=5,hsync=36

The configuration below is the one I face problems with for 1920x1200

Code:

dtoverlay=vc4-kms-dsi-genericdtparam=two-lane=1,hactive=1920dtparam=vactive=1200dtparam=vfp=3,vbp=36,hfp=136,hbp=336dtparam=vsync=6,hsync=200

I also used different timings for 1920x1200, for example the timing for 1280x800 however It could never make it work.

Which displays does this timing is related to? Can you post the data sheets? Maybe just your 'decided' timing is bad.

Statistics: Posted by kdil26 — Fri Apr 19, 2024 11:06 am

---