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3.1 vs 3.2 Kernel MityARM-335x Dev Kit HDMI not working consistently
Added by Alexander Block almost 11 years ago
This is being posted on behalf of a customer.
The HDMI output of MityARM-335x development kit with latest image (kernel 3.2) doesn’t work, but old image works fine (kernel 3.1). If I break boot process and manually initialize the HDMI chip (i2c mw 38 8 3d ; i2c mw 38 33 0) the output works fine. The uenv.txt files for old and newest images almost the same. Could you tell me how to fix it.
Thank you.
Replies (2)
RE: 3.1 vs 3.2 Kernel MityARM-335x Dev Kit HDMI not working consistently - Added by Jonathan Cormier almost 11 years ago
This is normal. As far as I'm aware the 3.1 kernel was never updated to initiate the HDMI chip and relied on u-boot as well.
RE: 3.1 vs 3.2 Kernel MityARM-335x Dev Kit HDMI not working consistently - Added by Jonathan Cormier almost 11 years ago
Environment variable can be setup like:
config_dvi=i2c dev 1;i2c mw 38 8 3d; i2c mw 38 33 0
and can be run from the bootcmd
bootcmd=run config_dvi;run mmc_boot
