Hi Wayne,
I pulled the kernel from the git repo tagged as tegra-l4t-r28.2-rc , and then I built it and tried it . It didn’t work. It spammed the same message “…hdmi: scdc scrambling status is reset…” , and it got frozen eventually. The whole system I mean. So it doesn’t support TX1 obviously its for TX2 only.
Its not announced though, but I think that the R28.2 GA for TX2/TX1 will be available in months or maybe more.
And I think this is a quite serious error, because the TX1 is named as a 4k UHD video dev-board, but actually it can’t drive lot of 4k display (I got 3 kind of 4k monitor, none works).
Is there any method, any other workaround than that mentioned patch.
For example I got full EDID info of my display, here is a fragment :
Timing characteristics
Horizontal scan range… 24-160kHz
Vertical scan range… 50-75Hz
Video bandwidth… 600MHz
CVT standard… Not supported
GTF standard… Not supported
Additional descriptors… None
Preferred timing… Yes
Native/preferred timing… 3840x2160p at 60Hz (16:9)
Modeline… “3840x2160” 533.250 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync
Detailed timing #1… 2560x1440p at 60Hz (16:9)
Modeline… “2560x1440” 241.500 2560 2607 2639 2720 1440 1443 1448 1481 +hsync -vsync
EIA/CEA-861 Information
Revision number… 3
IT underscan… Supported
Basic audio… Supported
YCbCr 4:4:4… Supported
YCbCr 4:2:2… Supported
Native formats… 1
Detailed timing #1… 1920x2160p at 60Hz (16:9)
Modeline… “1920x2160” 277.300 1920 1968 2000 2080 2160 2163 2173 2222 +hsync +vsync
Detailed timing #2… 3840x1080p at 60Hz (16:9)
Modeline… “3840x1080” 266.500 3840 3888 3920 4000 1080 1090 1093 1111 -hsync -vsync
Detailed timing #3… 3840x2160p at 30Hz (16:9)
Modeline… “3840x2160” 262.750 3840 3888 3920 4000 2160 2163 2168 2191 +hsync -vsync
Raw data
00,FF,FF,FF,FF,FF,FF,00,5A,63,34,5B,01,01,01,01,28,1B,01,04,B5,5E,35,78,3E,2E,DD,A6,55,4E,9A,26,
0E,47,4A,BF,EF,80,D1,C0,B3,00,A9,40,A9,C0,95,00,90,40,81,80,01,01,4D,D0,00,A0,F0,70,3E,80,30,20,
35,00,AD,11,32,00,00,1A,56,5E,00,A0,A0,A0,29,50,2F,20,35,00,AD,11,32,00,00,1A,00,00,00,FD,00,32,
4B,18,A0,3C,01,0A,20,20,20,20,20,20,00,00,00,FC,00,56,58,34,33,38,30,20,53,45,52,49,45,53,01,EE,
02,03,2E,F1,54,01,03,04,05,07,0A,0B,0E,0F,90,12,13,14,16,1F,60,61,65,66,5D,23,09,7F,07,83,01,00,
00,67,03,0C,00,20,00,38,78,E4,0F,00,80,07,52,6C,80,A0,70,70,3E,80,30,20,3A,00,AD,11,32,00,00,1E,
1A,68,00,A0,F0,38,1F,40,30,20,A3,00,AD,11,32,00,00,18,A3,66,00,A0,F0,70,1F,80,30,20,35,00,AD,11,
32,00,00,1A,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,76
…and more data I wish I knew what does it mean.
Is there any way to put this somehow in a .dts file to make it work ?
Please help.
Regards,
Laci