Dear Sir,
[Issue Description]
we test Huawei P20(Mali G72-MP12), Huawei P30(Mali G76-MP10), Samsung S8(Mali G71) w/ Type-C DisplayPort alternate mode.
Found GPU can't output correct 640x400 as EDID request. Please refer the following test result. Is there any limitation of requested timing.
[Failure Rate]
100%
[EDID Timing]
[GPU Compatibility Test Result]