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Tue, 03 Nov 2026 23:27:41 -0800 (PST) Received: from freddie-kane.lan ([71.212.222.246]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b07c7e087csm8019210a91.4.2026.11.03.23.27.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 23:27:41 -0800 (PST) From: Burke Cates To: ccortner@gmail.com Cc: Konrad Dybcio , Bjorn Andersson , Vinod Koul , Neil Armstrong , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] phy: qcom: edp: update v8 power-on programming sequence Date: Tue, 3 Nov 2026 23:27:37 -0800 Message-ID: <20261104072737.3489383-1-burke.cates@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <179346367993.44447.8683103034067826560.x2e-share-edp@gmail.com> References: <20260622-glymur-edp-phy-v1-0-814b45089ac9@oss.qualcomm.com> <20260622-glymur-edp-phy-v1-2-814b45089ac9@oss.qualcomm.com> <179346367993.44447.8683103034067826560.x2e-share-edp@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sat, Oct 31, 2026 at 11:24:31AM -0500, Christian Cortner wrote: > Writing the firmware values at the end of power-on, all 120 enables > over two boots trained 4 lanes cleanly, and 10 of 10 resumes. Which > register matters is not known. Happy to test a revision. Same result on another Zenbook A16 (eDP at HBR2 x4): v7.4-rc1 with Bjorn's v1 as posted (ldo_config 0xd0, not 0x91), out-of-tree Glymur board patches, and your five values written after DCC. Link enables with at least one failed training attempt, over fbdev blank/unblank cycles and boots: without the values: 30 of 400 enables, 8 of 61 boots with the values: 0 of 500 enables, 0 of 162 boots One dpu_encoder_virt_atomic_disable() "enc42 timeout pending" at a blank (1 in 500) appeared only with the values; cause unknown. AI coding assistants helped run these tests and draft this reply; the results are from the hardware runs. Thanks, Burke