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* [PATCH] drm/edid: Simplify min_pixel_clock_rate calculation
@ 2026-04-28 16:02 Jonathan Cavitt
  0 siblings, 0 replies; only message in thread
From: Jonathan Cavitt @ 2026-04-28 16:02 UTC (permalink / raw)
  To: dri-devel
  Cc: saurabhg.gupta, alex.zuo, jonathan.cavitt, maarten.lankhorst,
	mripard, tzimmermann, airlied, simona, linux-kernel

In calculate_ovt_min_htotal, we compute min_pixel_clock_rate as
max_vrate * min_htotal * min_vtotal.  However, we already calculated the
value of max_vrate * min_vtotal as min_line_rate.  So, just use that as
part of the calculation.

Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Simona Vetter <simona@ffwll.ch>
---
 drivers/gpu/drm/drm_edid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 63814af7f1c1..9f9c9c65296f 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5513,7 +5513,7 @@ static u32 calculate_ovt_min_htotal(const struct cta_rid *rid,
 
 	min_htotal = rid->hactive + max(OVT_MIN_HBLANK_444, *min_hblank);
 
-	min_pixel_clock_rate = max_vrate * min_htotal * min_vtotal;
+	min_pixel_clock_rate = min_line_rate * min_htotal;
 
 	htotal_granularity_chunk =
 		roundup_pow_of_two(DIV64_U64_ROUND_UP(min_pixel_clock_rate,
-- 
2.53.0


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2026-04-28 16:02 [PATCH] drm/edid: Simplify min_pixel_clock_rate calculation Jonathan Cavitt

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