Difference between revisions of "Jetson TX2/28 Display debug"

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==Get prepared==
 
This section focuses on debug display driver issue on rel-28.x release.<br>
 
Drivers of tegra display controller are under kernel source: https://developer.nvidia.com/embedded/downloads <br>
 
Location: <br>
 
'''For T210(TX1)''' <br>
 
kernel/display/drivers/video/tegra/dc/ <br>
 
'''For T186(TX2).''' Note that TX2 still uses driver code of T210. <br>
 
kernel/t18x/drivers/video/tegra/dc <br>
 
  
==Tips==
 
*Capture edid
 
sudo cat /sys/kernel/debug/tegradc.X/edid  #X=0,1,2.
 
* Forcing edid
 
# Prepare a known 256byte EDID.
 
# set use_fallback = true; in tegra_edid_get_monspecs() under edid.c.
 
# fill in the known EDID to default_720p_edid[256].
 
 
 
 
 
==Known issues==
 
*HDMI
 
** Display is not be able to up. Moreover, system is not able to up.(Fix after rel-28.2)
 
***https://devtalk.nvidia.com/default/topic/1003956/jetson-tx2/tx2-not-booting-up-with-hdmi-connected/post/5160211/#5160211
 

Latest revision as of 01:28, 10 January 2018