i.MX ProcessorsのトピックRe: Can the LVDS Resolution|Timing be changed after boot?

Can the LVDS Resolution|Timing be changed after boot?

robertberringto — Fri, 10 Jun 2016 19:34:25 GMT

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.

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

Thanks!

Re: Can the LVDS Resolution|Timing be changed after boot?

igorpadykov — Sat, 11 Jun 2016 00:47:40 GMT

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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Re: Can the LVDS Resolution|Timing be changed after boot?

robertberringto — Mon, 13 Jun 2016 13:59:26 GMT

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!

Re: Can the LVDS Resolution|Timing be changed after boot?

igorpadykov — Tue, 14 Jun 2016 00:50:43 GMT

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