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authorChon Ming Lee <chon.ming.lee@intel.com>2013-11-07 15:23:26 +0800
committerDaniel Vetter <daniel.vetter@ffwll.ch>2013-11-07 15:19:23 +0100
commit2325991e021fb0da21d8d08009d1eea78133745a (patch)
treea0f94e297b835714d6e8141da96a6630077b1008 /drivers
parent8245be31391974dc756a21cf2f2e25c7f53637c5 (diff)
downloadlinaro-lsk-2325991e021fb0da21d8d08009d1eea78133745a.tar.gz
drm/i915/vlv: Workaround a punit issue in DDR data rate for 1333.
For DDR data rate reporting by Punit in PUNIT_GPU_FREQ_STS, the actual data encoding is 00b=800, 01b=1066, 10b=1333, 11b=1333. Some premium VLV sku will get the DDR_DATA_RATE set as 11. As a result, the turbo frequency reporting will be incorrect without this workaround. Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f5bb9b34948..38943f8ef26 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5322,12 +5322,7 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
dev_priv->mem_freq = 1333;
break;
case 3:
- /*
- * Probably a BIOS/Punit bug, or a new platform we don't
- * support yet.
- */
- WARN(1, "invalid DDR freq detected, assuming 800MHz\n");
- dev_priv->mem_freq = 800;
+ dev_priv->mem_freq = 1333;
break;
}
DRM_DEBUG_DRIVER("DDR speed: %d MHz", dev_priv->mem_freq);