linux-kernel - [PATCH v6 0/2] TCPM non-PD mode

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Message-Id: <20210804081917.3390341-1-kyletso@google.com>
Date:   Wed,  4 Aug 2021 16:19:15 +0800
From:   Kyle Tso <kyletso@...gle.com>
To:     linux@...ck-us.net, heikki.krogerus@...ux.intel.com,
        gregkh@...uxfoundation.org, robh+dt@...nel.org
Cc:     badhri@...gle.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Kyle Tso <kyletso@...gle.com>
Subject: [PATCH v6 0/2] TCPM non-PD mode

(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