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| author | Wesley Chalmers <[email protected]> | 2021-04-08 19:51:11 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2021-06-15 21:25:41 +0000 |
| commit | 9cf9498f668d4c78616ebd2fe2e5f3850b189c5b (patch) | |
| tree | 07cf48ff664841732dd03c86c3cf95958cf3375e /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | drm/amd/display: Do not count I2C DEFERs with AUX DEFERs (diff) | |
| download | kernel-9cf9498f668d4c78616ebd2fe2e5f3850b189c5b.tar.gz kernel-9cf9498f668d4c78616ebd2fe2e5f3850b189c5b.zip | |
drm/amd/display: Partition DPCD address space and break up transactions
[WHY]
SCR for DP 2.0 spec says that multiple LTTPRs must not be accessed in a
single AUX transaction.
There may be other places in future where breaking up AUX accesses is
necessary.
[HOW]
Partition the entire DPCD address space into blocks. When an incoming AUX
request spans multiple blocks, break up the request into multiple requests.
Signed-off-by: Wesley Chalmers <[email protected]>
Reviewed-by: Jun Lei <[email protected]>
Acked-by: Anson Jacob <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions