Outputting YCbCr 4:2:2 10-bit at 1080p 60Hz works fine.
However, at 4K 30Hz with YCbCr 4:2:2 10-bit, the display does not show an image; instead, a free-run signal is output.
It should be supported under the HDMI 1.4 standard—does the ADV7626 not support this?