[PATCH v7 3/4] drm/i915: Find fallback link rate/lane count

2016-12-13 Thread Jani Nikula
On Fri, 09 Dec 2016, Jani Nikula wrote: > On Fri, 09 Dec 2016, Manasi Navare wrote: >> If link training fails, then we need to fallback to lower >> link rate first and if link training fails at RBR, then >> fallback to lower lane count. >> This function finds the next lower link rate/lane count >

[PATCH v7 3/4] drm/i915: Find fallback link rate/lane count

2016-12-09 Thread Jani Nikula
On Fri, 09 Dec 2016, Manasi Navare wrote: > If link training fails, then we need to fallback to lower > link rate first and if link training fails at RBR, then > fallback to lower lane count. > This function finds the next lower link rate/lane count > value after link training failure and limits t

[PATCH v7 3/4] drm/i915: Find fallback link rate/lane count

2016-12-08 Thread Manasi Navare
If link training fails, then we need to fallback to lower link rate first and if link training fails at RBR, then fallback to lower lane count. This function finds the next lower link rate/lane count value after link training failure and limits the max link_rate and lane_count values to these fallb