[Intel-gfx] [PATCH v9 6/7] drm/i915: Adjust CDCLK accordingly to our DBuf bw needs

According to BSpec max BW per slice is calculated using formula Max BW = CDCLK * 64. Currently when calculating min CDCLK we account only per plane requirements, however in order to avoid FIFO underruns we need to estimate accumulated BW consumed by all planes(ddb entries basically) residing on tha

Re: [Intel-gfx] [PATCH v9 6/7] drm/i915: Adjust CDCLK accordingly to our DBuf bw needs

On Wed, May 20, 2020 at 12:25:25AM +0300, Stanislav Lisovskiy wrote: > According to BSpec max BW per slice is calculated using formula > Max BW = CDCLK * 64. Currently when calculating min CDCLK we > account only per plane requirements, however in order to avoid > FIFO underruns we need to estimate

[Intel-gfx] [PATCH v9 6/7] drm/i915: Adjust CDCLK accordingly to our DBuf bw needs

According to BSpec max BW per slice is calculated using formula Max BW = CDCLK * 64. Currently when calculating min CDCLK we account only per plane requirements, however in order to avoid FIFO underruns we need to estimate accumulated BW consumed by all planes(ddb entries basically) residing on tha

[Intel-gfx] [PATCH v9 6/7] drm/i915: Adjust CDCLK accordingly to our DBuf bw needs

According to BSpec max BW per slice is calculated using formula Max BW = CDCLK * 64. Currently when calculating min CDCLK we account only per plane requirements, however in order to avoid FIFO underruns we need to estimate accumulated BW consumed by all planes(ddb entries basically) residing on tha