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| author | José Roberto de Souza <jose.souza@intel.com> | 2019-03-14 16:01:13 -0700 |
|---|---|---|
| committer | José Roberto de Souza <jose.souza@intel.com> | 2019-03-19 12:37:43 -0700 |
| commit | 06dd94cccdd142423fa5ce9f5c3ea0274ca84709 (patch) | |
| tree | 9c67aaeb117fca5509193fb339efacdbb411c329 /include | |
| parent | d2daff2c09887c18ce839daf1c428cededc8cae0 (diff) | |
| download | linux-06dd94cccdd142423fa5ce9f5c3ea0274ca84709.tar.bz2 | |
drm/i915: Fix PSR2 selective update corruption after PSR1 setup
There is probably a issue in DMC firmwares(icl_dmc_ver1_07.bin and
kbl_dmc_ver1_04.bin at least) that causes PSR2 SU to fail after
exiting DC6 if EDP_PSR_TP1_TP3_SEL is kept in PSR_CTL, so for now
lets workaround the issue by cleaning PSR_CTL before enable PSR2.
v2:
- Updated commit description and comment to state that it may be
a DMC firmware issue (Rodrigo)
- No need to RMW, let's write 0 to PSR_CTL(Dhinakaran)
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190314230113.6571-1-jose.souza@intel.com
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions