diff options
| author | Hugo Hu <hugo.hu@amd.com> | 2021-04-21 14:23:44 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-19 22:38:24 -0400 |
| commit | 132c894e93f18cf3b943753063bb0fd6ca8483ac (patch) | |
| tree | b0d7de24b8ad08b484700a823ae1c04edaddca6e /drivers/gpu/drm/amd/display/dmub/src | |
| parent | 5709121a58a21e0bbde362536ec456f1a64c4ec4 (diff) | |
| download | linux-132c894e93f18cf3b943753063bb0fd6ca8483ac.tar.gz linux-132c894e93f18cf3b943753063bb0fd6ca8483ac.tar.bz2 linux-132c894e93f18cf3b943753063bb0fd6ca8483ac.zip | |
drm/amd/display: treat memory as a single-channel for asymmetric memory V3
Previous patch caused crash and had been reverted. This patch
addresses the issue without regression.
[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.
Signed-off-by: Hugo Hu <hugo.hu@amd.com>
Reviewed-by: Sung Lee <Sung.Lee@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/src')
0 files changed, 0 insertions, 0 deletions