]> git.karo-electronics.de Git - linux-beck.git/commit
drm/i915/skl: Disable coarse power gating up until F0
authorMika Kuoppala <mika.kuoppala@linux.intel.com>
Mon, 7 Dec 2015 16:29:44 +0000 (18:29 +0200)
committerJani Nikula <jani.nikula@intel.com>
Tue, 8 Dec 2015 14:18:29 +0000 (16:18 +0200)
commit344df9809f4521c8c11d67c5ef18764b54358950
tree65e70dd3f2e9f14cf8199ca2f54f2695083f7e18
parent4a1e1d055bfdfb5ae0a50a4685a250d85d3bbcbc
drm/i915/skl: Disable coarse power gating up until F0

There is conflicting info between E0 and F0 steppings
for this workarounds. Trust more authoritative source and
be conservative and extend also for F0.

This prevents numerous (>50) gpu hangs with SKL GT4e
during piglit run.

References: HSD: gen9lp/2134184
Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449505785-20812-1-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 6686ece19f7446f0e29c77d9e0402e1d0ce10c48)
Cc: stable@vger.kernel.org # v4.3+
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_pm.c