drm/i915/cdclk: Add intel_cdclk_min_cdclk_for_prefill()

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Introduce a helper to compute the min required cdclk frequency
for a given guardband size. This could be used to bump up the
cdclk in case the vblank is so small that the normally computed
minimum cdclk results in too slow a prefill.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251014191808.12326-5-ville.syrjala@linux.intel.com

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Ville Syrjälä 2025-10-14 22:18:03 +03:00

parent 2b4c2a5e4d

commit 4157c75604

2 changed files with 15 additions and 0 deletions

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12

drivers/gpu/drm/i915/display/intel_cdclk.c

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3

drivers/gpu/drm/i915/display/intel_cdclk.h

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