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Tue, 12 Mar 2024 04:22:49 -0500 From: Wayne Lin To: CC: , , , , , , , , , , Nicholas Susanto , Nicholas Kazlauskas Subject: [PATCH 19/43] drm/amd/display: Enabling urgent latency adjustment for DCN35 Date: Tue, 12 Mar 2024 17:20:12 +0800 Message-ID: <20240312092036.3283319-20-Wayne.Lin@amd.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20240312092036.3283319-1-Wayne.Lin@amd.com> References: <20240312092036.3283319-1-Wayne.Lin@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Received-SPF: None (SATLEXMB04.amd.com: Wayne.Lin@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS2PEPF00003446:EE_|PH7PR12MB6667:EE_ X-MS-Office365-Filtering-Correlation-Id: f87fe07f-634b-4e3e-a974-08dc4275ffd4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(376005)(36860700004)(1800799015)(82310400014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Mar 2024 09:22:54.9720 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f87fe07f-634b-4e3e-a974-08dc4275ffd4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS2PEPF00003446.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6667 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Nicholas Susanto [Why] Underflow occurs when running netflix in a 4k144 eDP + 4k60 setup. Increasing DCFCLK or urgent latency watermark fixes the issue. Implementing this workaround for now while we figure out why this is happenning in DCN. [How] Enable urgent latency adjustment and match the reference to existing ASIC that also see increased latency at low FCLK. Reviewed-by: Nicholas Kazlauskas Acked-by: Wayne Lin Signed-off-by: Nicholas Susanto --- drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c index 80bebfc268db..4d7bcda8ef72 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c @@ -195,9 +195,9 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_5_soc = { .dcn_downspread_percent = 0.5, .gpuvm_min_page_size_bytes = 4096, .hostvm_min_page_size_bytes = 4096, - .do_urgent_latency_adjustment = 0, + .do_urgent_latency_adjustment = 1, .urgent_latency_adjustment_fabric_clock_component_us = 0, - .urgent_latency_adjustment_fabric_clock_reference_mhz = 0, + .urgent_latency_adjustment_fabric_clock_reference_mhz = 3000, }; void dcn35_build_wm_range_table_fpu(struct clk_mgr *clk_mgr) -- 2.37.3