UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915: Assert that HSW/BDW LCPLL is using the non-SSC reference 

Only the non-SSC reference is truly supported for the LCPLL. Assert
that it is indeed selected.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190604200933.29417-4-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2019-06-04 23:09:32 +03:00
parent 0f52c097a2
commit d1707a96b1
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/intel_display_power.c
View File

@ -3665,6 +3665,9 @@ static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
if (val & LCPLL_PLL_DISABLE)
DRM_ERROR("LCPLL is disabled\n");
if ((val & LCPLL_REF_MASK) != LCPLL_REF_NON_SSC)
DRM_ERROR("LCPLL not using non-SSC reference\n");
}
static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)