image corruption with high-res modes on DP

When running SM8350-HDK, USBC-HDMI dongle, 3840x2160-30 mode, I got the following screen corruption (note the stripe at the right side of the screen). display mode for the referene: #0 3840x2160 30.00 3840 4016 4104 4400 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver