diff options
| author | Alvin Lee <Alvin.Lee2@amd.com> | 2023-04-27 15:10:13 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-17 13:59:06 +0200 |
| commit | ea124021fd75a159e3c32e13bbc26ad859cba872 (patch) | |
| tree | e1fe20a40a6d4bc25ac721d0749ea74ab0e91883 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 2b5633e31f2e097119b3c7f2d9a59c558571056e (diff) | |
drm/amd/display: Enforce 60us prefetch for 200Mhz DCFCLK modes
commit b504f99ccaa64da364443431e388ecf30b604e38 upstream.
[Description]
- Due to bandwidth / arbitration issues at 200Mhz DCFCLK,
we want to enforce minimum 60us of prefetch to avoid
intermittent underflow issues
- Since 60us prefetch is already enforced for UCLK DPM0,
and many DCFCLK's > 200Mhz are mapped to UCLK DPM1, in
theory there should not be any UCLK DPM regressions by
enforcing greater prefetch
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions