From b60efcaf5e8b49dcf679e1ddf2a9ad333b21ea53 Mon Sep 17 00:00:00 2001
From: Nikola Cornij <nikola.cornij@amd.com>
Date: Tue, 28 Sep 2021 22:43:52 -0400
Subject: [PATCH] drm/amd/display: Limit display scaling to up to true 4k for DCN 3.1
Git-commit: c21b105380cf86e829c68586ca1315cfc253ad8c
Patch-mainline: v5.15
References: stable-5.14.16
commit c21b105380cf86e829c68586ca1315cfc253ad8c upstream.
[why]
The requirement is that image width up to 4096 shall be supported
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Agustin Gutierrez Sanchez <agustin.gutierrez@amd.com>
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@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 75bd39e23980..fc643ee0e543 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 = 3840,/*upto 4K*/
+ .max_downscale_src_width = 4096,/*upto true 4K*/
.disable_pplib_wm_range = false,
.scl_reset_length10 = true,
.sanity_checks = false,
--
2.26.2