From: Kyle Tso <kyletso@google.com>
To: linux@roeck-us.net, heikki.krogerus@linux.intel.com,
gregkh@linuxfoundation.org, robh+dt@kernel.org
Cc: badhri@google.com, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
Kyle Tso <kyletso@google.com>
Subject: [PATCH v6 0/2] TCPM non-PD mode
Date: Wed, 4 Aug 2021 16:19:15 +0800 [thread overview]
Message-ID: <20210804081917.3390341-1-kyletso@google.com> (raw)
(changed the property name only)
The reason for this patch is to let the device/system policy decide
whether PD is going to be supported using devicetree properties.
A new dt property "pd-disable" is introduced and TCPM uses this
property as a flag to decide whether PD is supported. If the flag is
false (the dt property is not present), the RX functionality of the
low-level driver will not be enabled. The power negotiation related
states will be skipped as well. If the flag is true, everything is a
what it was before.
If "pd-disable" is present, and the port is SRC or DRP, another
existing dt property "typec-power-opmode" needs to be specified to
indicate which Rp value should be used when the port is SRC.
changes since v5:
dt-bindings: connector: Add pd-disable property
- Changed the property name to "pd-disable"
usb: typec: tcpm: Support non-PD mode
- Changed the property name to "pd-disable"
- Added Acked-by tag
Kyle Tso (2):
dt-bindings: connector: Add pd-disable property
usb: typec: tcpm: Support non-PD mode
.../bindings/connector/usb-connector.yaml | 4 +
drivers/usb/typec/tcpm/tcpm.c | 87 +++++++++++++++----
2 files changed, 72 insertions(+), 19 deletions(-)
--
2.32.0.554.ge1b32706d8-goog
next reply other threads:[~2021-08-04 8:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-04 8:19 Kyle Tso [this message]
2021-08-04 8:19 ` [PATCH v6 1/2] dt-bindings: connector: Add pd-disable property Kyle Tso
2021-08-11 18:52 ` Rob Herring
2021-08-04 8:19 ` [PATCH v6 2/2] usb: typec: tcpm: Support non-PD mode Kyle Tso
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