From 4fd24bff9fac2bef4319631e48519f845ac82ad8 Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@amd.com>
Date: Fri, 1 Oct 2021 22:36:14 +0800
Subject: [PATCH] drm/amd/display: Limit display scaling to up to 4k for DCN 3.1
Git-commit: a7e397b7c45377e20542146be10231b8afa948d1
Patch-mainline: v5.15-rc5
References: stable-5.14.12
commit a7e397b7c45377e20542146be10231b8afa948d1 upstream.
[why]
The existing limit was mistakenly bigger than 4k for DCN 3.1
Reviewed-by: Zhan Liu <Zhan.Liu@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index cd3248dc31d8..82f231d19dec 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -928,7 +928,7 @@ static const struct dc_debug_options debug_defaults_drv = {
.disable_dcc = DCC_ENABLE,
.vsr_support = true,
.performance_trace = false,
- .max_downscale_src_width = 7680,/*upto 8K*/
+ .max_downscale_src_width = 3840,/*upto 4K*/
.disable_pplib_wm_range = false,
.scl_reset_length10 = true,
.sanity_checks = false,
--
2.26.2