diff options
| author | osé Roberto de Souza <[email protected]> | 2018-04-25 14:23:31 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <[email protected]> | 2018-04-26 15:35:06 -0700 |
| commit | 75cbec033c08f6d41c4775784f66ab860d02a6b5 (patch) | |
| tree | 53d9b77ad52943262ca9a3bc42408d8879cd9b1d /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 935dff1a218c2162aad8f0e681cbb5d601742412 (diff) | |
drm/i915/psr: Prevent PSR exit when a non-pipe related register is written
Any write in any display register was causing HW to exit PSR,
masking it to allow more power savings. Writes to pipe related
registers will still cause HW to exit PSR.
This is already masked for PSR2.
It also do not break the Display WA #0884, writes to CURSURFLIVE
are still causing hardware to exit PSR. This was tested in CNL machine
by triggering a write to CURSURFLIVE when a debugfs was read by user.
Bspec: 7721 and 8042
v4: Checked that it do not breaks WA #0884 and added this information
to the commit message.
Cc: Rodrigo Vivi <[email protected]>
Reviewed-by: Dhinakaran Pandiyan <[email protected]>
Signed-off-by: José Roberto de Souza <[email protected]>
Signed-off-by: Rodrigo Vivi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions