From mboxrd@z Thu Jan 1 00:00:00 1970 From: Badhri Jagan Sridharan Subject: [PATCH 1/3] [PATCH 1/3] dt-bindings: connector: Add self-powered property Date: Fri, 28 Sep 2018 16:47:01 -0700 Message-ID: <20180928234703.15970-1-badhri@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Mark Rutland , Heikki Krogerus , Greg Kroah-Hartman , Chanwoo Choi , Andrzej Hajda , Li Jun , linux@roeck-us.net Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Badhri Jagan Sridharan List-Id: devicetree@vger.kernel.org >>From USB_PD_R3_0 7.1.5 Response to Hard Resets Device operation during and after a Hard Reset is defined as follows: Self-powered devices Should Not disconnect from USB during a Hard Reset (see Section 9.1.2). Bus powered devices will disconnect from USB during a Hard Reset due to the loss of their power source. Therefore it is necessary to know whether the port belongs to a device which is self powered or bus powered. This change adds "self-powered" flag to the connector class which present indicates that the port belongs to a device that is self powered. Else it is bus powered usb device. Signed-off-by: Badhri Jagan Sridharan --- Documentation/devicetree/bindings/connector/usb-connector.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.txt b/Documentation/devicetree/bindings/connector/usb-connector.txt index 8855bfcfd7785..8f7a36ae29bf7 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.txt +++ b/Documentation/devicetree/bindings/connector/usb-connector.txt @@ -14,6 +14,8 @@ Optional properties: - label: symbolic name for the connector, - type: size of the connector, should be specified in case of USB-A, USB-B non-fullsize connectors: "mini", "micro". +- self-powered: Set this property if the usb device that has its own power + source. Optional properties for usb-c-connector: - power-role: should be one of "source", "sink" or "dual"(DRP) if typec -- 2.19.0.605.g01d371f741-goog