[Bug 87703] New: [HSW/BYT/BDW/BSW] PSR feature is disabled by default

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87703

            Bug ID: 87703
           Summary: [HSW/BYT/BDW/BSW] PSR feature is disabled by default
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: wendy.wang at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

In all branches, by default kernel setting, PSR feature is disabled by default
for PSR supported platforms.

Submit this bug is aims to mark PSR feature current status.

Expected Behavior：
PSR as a POR feature, should be enabled by default, but currently because of
the issue, this feature has been disabled.

If want to enable, must add "i915.enable_psr=1" parameter in kernel.

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