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 :
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
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
…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 ?