[PATCH 23/51] drm/amd/display: fix dml20 min_dst_y_next_start calculation

[sunpeng.li at amd.com]

From: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>

Bring this calculation in line with HW programming guide.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
 .../gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c  | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c
index 2c7455e22a65..9df24ececcec 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/display_rq_dlg_calc_20.c
@@ -929,8 +929,7 @@ static void dml20_rq_dlg_get_dlg_params(struct display_mode_lib *mode_lib,
 	min_dst_y_ttu_vblank = min_ttu_vblank * pclk_freq_in_mhz / (double) htotal;
 	dlg_vblank_start = interlaced ? (vblank_start / 2) : vblank_start;
 
-	disp_dlg_regs->min_dst_y_next_start = (unsigned int) (((double) dlg_vblank_start
-			+ min_dst_y_ttu_vblank) * dml_pow(2, 2));
+	disp_dlg_regs->min_dst_y_next_start = (unsigned int) ((double) dlg_vblank_start * dml_pow(2, 2));
 	ASSERT(disp_dlg_regs->min_dst_y_next_start < (unsigned int) dml_pow(2, 18));
 
 	dml_print("DML_DLG: %s: min_dcfclk_mhz                         = %3.2f\n",
-- 
2.24.0