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-rw-r--r--src/soc/qualcomm/sc7180/display/mdss.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/soc/qualcomm/sc7180/display/mdss.c b/src/soc/qualcomm/sc7180/display/mdss.c
index 2d6bf6fcd3..ce46e8e880 100644
--- a/src/soc/qualcomm/sc7180/display/mdss.c
+++ b/src/soc/qualcomm/sc7180/display/mdss.c
@@ -6,7 +6,7 @@
#include <edid.h>
#include <soc/display/mdssreg.h>
-#define MDSS_MDP_MAX_PREFILL_FETCH 25
+#define MDSS_MDP_MAX_PREFILL_FETCH 24
static void mdss_source_pipe_config(struct edid *edid)
{
@@ -91,9 +91,10 @@ static void mdss_intf_fetch_start_config(struct edid *edid)
/*
* MDP programmable fetch is for MDP with rev >= 1.05.
* Programmable fetch is not needed if vertical back porch
- * plus vertical puls width is >= 25.
+ * plus vertical pulse width plus extra line for the extra h_total
+ * added during fetch start is >= 24.
*/
- if ((edid->mode.vbl - edid->mode.vso) >= MDSS_MDP_MAX_PREFILL_FETCH)
+ if ((edid->mode.vbl - edid->mode.vso + 1) >= MDSS_MDP_MAX_PREFILL_FETCH)
return;
/*