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[2001:4c4e:1b8f:c500:8829:1d65:ff09:2d15]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-482a5b81748sm5966682f8f.37.2026.08.17.10.30.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Aug 2026 10:30:18 -0700 (PDT) From: Igor Paunovic To: Sebastian Reichel Cc: Igor Paunovic , Vinod Koul , Heiko Stuebner , Frank Wang , Andy Yan , Dmitry Baryshkov , Alexey Charkov , linux-phy@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com Subject: Re: [PATCH v14 00/38] phy: rockchip: usbdp: Clean up the mess Date: Mon, 17 Aug 2026 19:29:52 +0200 Message-ID: <20260817172955.16305-1-royalnet026@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: <20260815121608.64818-1-royalnet026@gmail.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Sebastian, > 30 seconds for PD negotiation is indeed very slow. Usually it's at > least 10x faster. Have you checked for the root cause via TCPM log? I have now, and I owe you a correction: the 30 s was my measurement artifact, not negotiation time. The journal does not record the replug instant, so the figure I quoted was deregistration to re-registration - including however long the cable simply sat unplugged. Today, with the TCPM debugfs log and a controlled replug: [12954.114919] CC1: 0 -> 2, CC2: 0 -> 1 <- replug [12955.837527] PD RX, header: 0x2e8f <- PD exchange running DRM reports the connector connected 2.1 s after the replug and the compositor lights the output about 4 s after. The adapter negotiates at normal speed; nothing to chase. Sorry for the noise, and thanks for the tcpm devres fix. Regards, Igor