28 Mar
2013
28 Mar
'13
09:19
On 2013-03-28 10:55, Guillaume Gardet wrote:
I think I identified the problem.
The TFP410 (dvi chip) is kept in power down state (PD_n pin). I verified it on hardware, the pin is in reset state (0 V) with recent kernels, whereas it is in normal state (3.3 V) with older kernels. I need to dig a bit further to know where is the problem in the code.
Hmm, ok. I don't see any changes in the beagle board file regarding the TFP PD gpio for many kernel versions. It would be rather odd if Beagle xM's DVI output has been non-functional for so long. The board file code regarding the gpios is rather confusing, though, and I don't really get it... Could you try, say, v3.8 on your board? With omapfb? Tomi