From: Chon Ming Lee Date: Thu, 7 Nov 2013 07:23:26 +0000 (+0800) Subject: drm/i915/vlv: Workaround a punit issue in DDR data rate for 1333. X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=2325991e021fb0da21d8d08009d1eea78133745a;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: Ville Syrjälä Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f5bb9b349487..38943f8ef260 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);