Msoo
July 12, 2017, 1:38am
1
Hello,
I am MINSOO JUNG in korea
I try to edp communication but don’t work.
I messured Aux signal using a oscilloscope and it’s ok
But, When i AUX register WRITE is not ok. [Time read out message]
and i wonder that this message
[ 3121.516596] tegradc tegradc.0: dp: channel equalization failed
[ 3121.526765] tegradc tegradc.0: dp: full lt failed.
this message
thanks.
eDP PIN.pptx (36.5 KB)
Hi Msoo,
Could you share how you connect your eDP to tk1? Any schematics?
Msoo
July 12, 2017, 3:11am
3
Thanks,
Board on shematics
I don’t see the link or any images. Do you miss it?
Msoo
July 12, 2017, 3:30am
5
No , i don’t miss it
you are Just click edp line.png
Oops, it is on the top comment. I see it.
Please wait for a while. We will help you check the design.
Hi Msoo,
It seems the connection mapping has something wrong. Could you please check the Tegra K1 Embedded Platform Design Guide? There is a section “eDP 4-lane connection”
Msoo
July 12, 2017, 6:02am
9
Thanks,
Reply to me.
But, it’s a relative AUX Channel?
Hi Msoo,
Sorry I don’t quite understand what do you mean. Could you make it more clear?
Msoo
July 12, 2017, 11:53am
11
okay.
I think that AUX channel is problem.
But i massured AUX channell wave it’s not problem.
so… how can way ?
Can you make sure all other connection is correct?