Re: [Intel-gfx] [PATCH 10/16] drm/i915: Power down the DSI PLL before reconfiguring it

2016-03-16 Thread Jani Nikula
On Tue, 15 Mar 2016, ville.syrj...@linux.intel.com wrote: > [ text/plain ] > From: Ville Syrjälä > > On VLV at least, the BIOS may leave the DSI PLL enabled in some wonky > state where it just refuses to lock. Simply disabling the PLL before > reconfiguring it is not enough to fix it, but power ga

[Intel-gfx] [PATCH 10/16] drm/i915: Power down the DSI PLL before reconfiguring it

2016-03-15 Thread ville . syrjala
From: Ville Syrjälä On VLV at least, the BIOS may leave the DSI PLL enabled in some wonky state where it just refuses to lock. Simply disabling the PLL before reconfiguring it is not enough to fix it, but power gating the PLL prior to reconfiguring does work. This happens on BYT FFRD8 when booti