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AJvYcCWiLi6lmAKDm9wUqka6PhO/NpJCBAJggJXhiUmlzR67AGKsIYVDfb2PbBV5dZpo8eH+OVKUKFOpSaQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzkfO5Lk+cpJor07Rr5a4lvRsXNrnwVMhTGU9npDGqcz5UrP60O 43+3o+0qJrpcNEH7wNAmqFQA7MNSOWuaKHU1P50bymNxCdYfEBOryvGpXOIPuKB7t0u27QFTYT8 +cQ== X-Google-Smtp-Source: AGHT+IFtsw1CqjzV/sSzOx+52KMljtEulrqPxf+Kx+05Kx6SAXpGeTLFotSa7WrdF+OVatsVoVJKlZNHePc= X-Received: from amitsd-gti.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:827]) (user=amitsd job=sendgmr) by 2002:a25:83c3:0:b0:e30:c79e:16bc with SMTP id 3f1490d57ef6-e30c79e1861mr11704276.8.1730419206198; Thu, 31 Oct 2024 17:00:06 -0700 (PDT) Date: Thu, 31 Oct 2024 16:59:52 -0700 In-Reply-To: <20241031235957.1261244-1-amitsd@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241031235957.1261244-1-amitsd@google.com> X-Mailer: git-send-email 2.47.0.199.ga7371fff76-goog Message-ID: <20241031235957.1261244-2-amitsd@google.com> Subject: [PATCH v1 1/3] dt-bindings: connector: Add time property for Sink BC12 detection completion From: Amit Sunil Dhamne To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, gregkh@linuxfoundation.org, heikki.krogerus@linux.intel.com Cc: dmitry.baryshkov@linaro.org, kyletso@google.com, rdbabiera@google.com, badhri@google.com, linux@roeck-us.net, xu.yang_2@nxp.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Amit Sunil Dhamne This commit adds a new time property for Battery charger (BC1.2) type detection completion process (based on BCv1.2 detection spec) when typec port connects in a potential sink role. BC1.2 detection is used by some Type C port controllers implementations (such as "maxim,max33359") to detect the type of charger port. Signed-off-by: Amit Sunil Dhamne --- .../devicetree/bindings/connector/usb-connector.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index 21a0c58c65cd..67700440e23b 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -283,6 +283,16 @@ properties: maximum: 200 default: 200 + sink-bc12-completion-time-ms: + description: Represents the max time in ms that a port in sink role takes + to complete Battery Charger (BC1.2) Detection. BC1.2 detection is a + hardware mechanism, which in some TCPC implementations, can run in + parallel once the Type-C connection state machine reaches the "potential + connect as sink" state. In TCPCs where this causes delays to respond to + the incoming PD messages, sink-bc12-completion-time-ms is used to delay + PD negotiation till BC1.2 detection completes. + default: 0 + dependencies: sink-vdos-v1: [ sink-vdos ] sink-vdos: [ sink-vdos-v1 ] @@ -426,6 +436,7 @@ examples: sink-wait-cap-time-ms = <465>; ps-source-off-time-ms = <835>; cc-debounce-time-ms = <101>; + sink-bc12-completion-time-ms = <500>; }; };