https://bugs.freedesktop.org/show_bug.cgi?id=73530
N.Leiten nickleiten@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |nickleiten@gmail.com
--- Comment #77 from N.Leiten nickleiten@gmail.com --- Created attachment 115629 --> https://bugs.freedesktop.org/attachment.cgi?id=115629&action=edit Panel datasheet
At this time I managed to get working video-stream to panel, but the timings is obviously wrong. The main problem is Spread Spectrum somehow get disabled in reinit cycle, and not enabled, so I just removed SS management and got blinking noise on the screen. Also I added some delays that necessary for this panel (maybe all another needs it too). Due to attached datasheet on page 15 we got sequence of power-on and power-off for this panel. Interesting this is Reset interval of 500ms which is mandatory between power-off panel and powering it back on.
Now I'm trying to figure initial PLL setings that BIOS set before OS starts, after that I'll try to fix this behaviour. I don't fully know vesa framebuffer initialization, but as I understand, it get values from VBIOS/default BIOS address space for VGA and trying to apply them. Moreover, when radeon KMS is off I got fully different values of Modeline comparing to EDID.