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Tue, 8 Sep 2026 06:39:25 -0500 From: Chenyu Chen To: CC: Harry Wentland , Leo Li , Aurabindo Pillai , Roman Li , Wayne Lin , Tom Chung , "Fangzhi Zuo" , Dan Wheeler , Ray Wu , Ivan Lipski , Alex Hung , James Lin , Chenyu Chen , Alvin Lee , Dillon Varone , Chenyu Chen Subject: [PATCH 39/66] drm/amd/display: Enable back alt-ch Date: Tue, 8 Sep 2026 19:31:32 +0800 Message-ID: <20260908113338.2433445-40-chen-yu.chen@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260908113338.2433445-1-chen-yu.chen@amd.com> References: <20260908113338.2433445-1-chen-yu.chen@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002326:EE_|LV8PR12MB9334:EE_ X-MS-Office365-Filtering-Correlation-Id: 7a0f8e10-d54b-4128-b48e-08df0d9ddf50 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|23010399003|36860700016|1800799024|82310400026|376014|10067099003|18002099003|22082099003|56012099006|11063799006; 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Also enable workaround path for better debug capability. Reviewed-by: Dillon Varone Signed-off-by: Alvin Lee Signed-off-by: Chenyu Chen --- drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c index 4eb9f7e2d110..21292af6a0c0 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn60/dcn60_resource.c @@ -670,11 +670,10 @@ static const struct dc_debug_options debug_defaults_drv = { .enable_ppt_check = true, .enable_offload_flip = true, .enable_stall_recovery = true, + .alternate_channel_workaround = true, } }, .force_cositing = CHROMA_COSITING_NONE + 1, - .dml21_disable_pstate_method_mask = 0x20, // disable alt-ch unconditionally until dependencies are ready - }; static const struct dc_check_config config_defaults = { -- 2.43.0