Can the LVDS Resolution|Timing be changed after boot?

[robertberringto]

I have an LVDS -> HDMI converter chip. The HDMI works on some monitors, but not others. I suspect I may need to use the EDID interface to change the LVDS settings to be compatible with the monitor.

1. Can the LVDS settings be changed after boot (on-the-fly)?
2. Does the LVDS interface support EDID automatically?

Thanks!

[igorpadykov · Accepted solution]

Hi Robert

for linux one can look at

Framebuffer HOWTO

seems there is no way to change resolution after boot,

also LVDS interface does not support EDID automatically.

Best regards

igor

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[robertberringto]

igor,

Bummer!

Can I write custom code to accomplish this? I'm assuming I'd either have to write code to directly control the i.MX6 registers/settings or put custom hooks into the Kernal to allow this functionality.

I'm trying to figure out how big a problem I have.

Thanks!

[igorpadykov]

Hi Robert

for new lcd resolution one can  look at Chapter 17,

Chapter 18 Connecting an LVDS Panel i.MX53 System Development

User’s Guide http://www.freescale.com/files/32bit/doc/user_guide/MX53UG.pdf

and attached ldb example from i.MX6 sdk

Best regards

igor