From: Badhri Jagan Sridharan <badhri@google.com>
To: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Chanwoo Choi <cw00.choi@samsung.com>,
Andrzej Hajda <a.hajda@samsung.com>, Li Jun <jun.li@nxp.com>,
linux@roeck-us.net
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org,
Badhri Jagan Sridharan <badhri@google.com>
Subject: [PATCH 1/3] [PATCH 1/3] dt-bindings: connector: Add self-powered property
Date: Fri, 28 Sep 2018 16:47:01 -0700 [thread overview]
Message-ID: <20180928234703.15970-1-badhri@google.com> (raw)
>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 <badhri@google.com>
---
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
next reply other threads:[~2018-09-28 23:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-28 23:47 Badhri Jagan Sridharan [this message]
2018-09-28 23:47 ` [PATCH 2/3] [PATCH v2 2/3] usb: typec: tcpm: Do not disconnect link for self powered devices Badhri Jagan Sridharan
2018-09-30 22:04 ` Guenter Roeck
2018-10-01 9:53 ` Heikki Krogerus
2018-10-01 19:45 ` Badhri Jagan Sridharan
2018-09-28 23:47 ` [PATCH 3/3] [PATCH v2 3/3] usb: typec: tcpm: charge current handling for sink during hard reset Badhri Jagan Sridharan
2018-09-28 23:48 ` Badhri Jagan Sridharan
2018-09-30 22:05 ` Guenter Roeck
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