This topic is a discussion of advanced development topics by community members. Once a release is made and HardKernel officially adopts it, then it can be expected that everything officially supported should work. It is a "work in progress".Įventually, Amlogic will release a 4.x kernel. It should be expected that certain things may not work completely or are currently not supported in mainline. Support for things gets incrementally added to the mainline linux kernel. Im so glad we got back to talking about DACs! I was worried this discussion was going to go way off topic. I've enabled HDMI output with the following: If test "$Īfter copying all the files the /boot partition has the following files : # Before changing anything here please read the wiki entry: Setenv condev "console=ttyS0,115200n8 console=tty0" # on both # Force the MMC controlled to believe that a card is connected. # UHS (Ultra High Speed) MicroSD mode enable/disable # Using arch timer allows KVM/Virtualization to work however you'll experience poor video # Using meson_timer improves the video playback however it breaks KVM (virtualization). ![]() # This mode is ideal of server type usage. # Setting nographics to 1 will disable all video subsystem ![]() Setenv monitor_onoff "false" # true or false # Controls if HDMI PHY should output anything to the monitor # false = will let board/monitor negotiate the connection status # true = HDMI will believe that cable is always connected # Allows you to force HDMI thinking that the cable is connected. # By default its set to HDMI, if needed change below. # setenv m "2160p60hz420" # Progressive 60Hz with YCbCr 4:2:0 (Requires TV/Monitor that supports it) # setenv m "2160p50hz420" # Progressive 50Hz with YCbCr 4:2:0 (Requires TV/Monitor that supports it) # setenv m "2160p60hz" # Progressive 60Hz # setenv m "2160p50hz" # Progressive 50Hz # setenv m "smpte24hz" # Progressive 24Hz SMPTE # setenv m "2160p24hz" # Progressive 24Hz ![]() # setenv m "2160p25hz" # Progressive 25Hz # setenv m "2160p30hz" # Progressive 30Hz # setenv m "1080p24hz" # Progressive 24Hz # setenv m "1080p50hz" # Progressive 50Hz # setenv m "1080p60hz" # Progressive 60Hz # setenv m "576p_rpt" # Progressive for Rear Projection Televisions 50Hz # setenv m "576i_rpt" # Interlaced for Rear Projection Televisions 50Hz # setenv m "480p_rpt" # 480 Progressive for Rear Projection Televisions 60Hz # setenv m "480p60hz" # 480 Progressive 60Hz # setenv m "480i_rpt" # Interlaced for Rear Projection Televisions 60Hz # To use custom modeline you need to disable all the below resolutions # Uncomment only a single Line! The line with setenv written. # rewrite this file with your personal permanent settings. # After changing it on run the bootini command to # To make your changes permanent change it on ![]() # Changes made to this are overwritten every time there's a new upgrade We need to use the mkimage command to produce the uImage from an existing Image (I posted this command before in this thread but I had a typo in the load address, below is correct and I also fixed my earlier post) When you say the shipped uboot with Ubuntu is this the hardkernel uboot or mainline?įor hardkernel uboot you would need to use a uImage format of image to load as the entry point / load address for the image (not the uImage) must be modified. It seems the load address / entry point might be wrong. "Synchronous Abort" handler, esr 0x96000010 Image Type: AArch64 Linux Kernel Image (uncompressed) # Booting kernel from Legacy Image at 01080000.
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