diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 45f71e6..675e8a2 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1070,6 +1070,17 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz, wm_size = wm->max_wm; if (wm_size <= 0) wm_size = wm->default_wm; + + /* + * Bspec seems to indicate that the value shouldn't be lower than + * 'burst size + 1'. Certainly 830 is quite unhappy with low values. + * Lets go for 8 which is the burst size since certain platforms + * already use a hardcoded 8 (which is what the spec says should be + * done). + */ + if (wm_size <= 8) + wm_size = 8; + return wm_size; } |
