Setting HDMI boot resolution for non-graphical mode?

[ndavey]

Hi,
I'm probably missing something really simple.
I'm running my A64 in non graphical mode (not booting X), as I need to access the framebuffer device.
The HDMI port is defaulting to 1920x1080, I want to set it lower, and I can't find where/how to do that.

Help please on where and how do I change HDMI boot resolution?

Thanks,
Neil

[ndavey]

Looks like I found the answer..

For an 800x600@60Hz HDMI output I added the following to /boot/uEnv.txt

optargs=video=HDMI-A-1:800x600@60e

save, reboot, done.