drm/amd/display: treat memory as a single-channel for asymmetric memory v2
Previous change had been reverted since it caused hang. Remake change to avoid defect. [Why] 1. Driver use umachannelnumber to calculate watermarks for stutter. In asymmetric memory config, the actual bandwidth is less than dual-channel. The bandwidth should be the same as single-channel. 2. We found single rank dimm need additional delay time for stutter. [How] Get information from each DIMM. Treat memory config as a single-channel for asymmetric memory in bandwidth calculating. Add additional delay time for single rank dimm. Fixes: b8720ed0 ("drm/amd/display: System black screen hangs on driver load") Signed-off-by:Hugo Hu <hugo.hu@amd.com> Reviewed-by:
Sung Lee <Sung.Lee@amd.com> Acked-by:
Aurabindo Pillai <aurabindo.pillai@amd.com> Tested-by:
Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
parent
8a20c973
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