From: jsg <jsg@openbsd.org>
Date: Wed, 13 Sep 2023 12:38:25 +0000 (+0000)
Subject: Partially revert "drm/amd/display: Fix possible underflow for displays with large... 
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=953298bf7618bf4cc6c6534aa9f1274375c6bd2b;p=openbsd

Partially revert "drm/amd/display: Fix possible underflow for displays with large vblank"

From Daniel Miess
9fc3adc6d0fe96e79e21990faebc252814ee18a4 in linux-6.1.y/6.1.53
a99a4ff6ef205d125002fc7e0857074e4e6597b6 in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/sys/dev/pci/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
index 8a88605827a..551a63f7064 100644
--- a/sys/dev/pci/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
+++ b/sys/dev/pci/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
@@ -32,7 +32,7 @@
 #include "dml/display_mode_vba.h"
 
 struct _vcs_dpi_ip_params_st dcn3_14_ip = {
-	.VBlankNomDefaultUS = 800,
+	.VBlankNomDefaultUS = 668,
 	.gpuvm_enable = 1,
 	.gpuvm_max_page_table_levels = 1,
 	.hostvm_enable = 1,