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[34.127.59.21]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82cf9ca75dfsm6785331b3a.60.2026.04.03.15.45.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Apr 2026 15:45:48 -0700 (PDT) Date: Fri, 3 Apr 2026 22:45:45 +0000 From: Benson Leung To: Jameson Thies Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, abhishekpandit@chromium.org, bleung@chromium.org, heikki.krogerus@linux.intel.com, akuchynski@chromium.org, gregkh@linuxfoundation.org, devicetree@vger.kernel.org, chrome-platform@lists.linux.dev, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/2] dt-bindings: chrome: Add cros-ec-ucsi compatibility to typec binding Message-ID: References: <20260403223357.1896403-1-jthies@google.com> <20260403223357.1896403-2-jthies@google.com> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="jztD/bANTVs+KmqZ" Content-Disposition: inline In-Reply-To: <20260403223357.1896403-2-jthies@google.com> --jztD/bANTVs+KmqZ Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 03, 2026 at 10:33:26PM +0000, Jameson Thies wrote: > Chrome OS devices with discrete power delivery controllers (PDCs) allow > the host to read port status and control port behavior through a USB > Type-C Connector System Software (UCSI) interface with the embedded > controller (EC). This uses a separate interface driver than other > Chrome OS devices with a Type-C port manager in the EC FW. Those use > a host command interface supported by cros-ec-typec. Add a cros-ec-ucsi > compatibility string to the existing cros-ec-typec binding. >=20 > Additionally, update maintainer list to reflect cros-ec-ucsi and > cros-ec-typec driver maintainers. >=20 > Signed-off-by: Jameson Thies Reviewed-by: Benson Leung > --- > .../bindings/chrome/google,cros-ec-typec.yaml | 19 +++++++++++++++---- > 1 file changed, 15 insertions(+), 4 deletions(-) >=20 > diff --git a/Documentation/devicetree/bindings/chrome/google,cros-ec-type= c.yaml b/Documentation/devicetree/bindings/chrome/google,cros-ec-typec.yaml > index 9f9816fbecbc..fd1a459879bd 100644 > --- a/Documentation/devicetree/bindings/chrome/google,cros-ec-typec.yaml > +++ b/Documentation/devicetree/bindings/chrome/google,cros-ec-typec.yaml > @@ -8,17 +8,28 @@ title: Google Chrome OS EC(Embedded Controller) Type C = port driver. > =20 > maintainers: > - Benson Leung > - - Prashant Malani > + - Abhishek Pandit-Subedi > + - Andrei Kuchynski > + - =C5=81ukasz Bartosik > + - Jameson Thies > =20 > description: > Chrome OS devices have an Embedded Controller(EC) which has access to > Type C port state. This node is intended to allow the host to read and > - control the Type C ports. The node for this device should be under a > - cros-ec node like google,cros-ec-spi. > + control the Type C ports. This binding is compatible with both the > + cros-ec-typec and cros-ec-ucsi drivers. The cros-ec-typec driver > + supports the host command interface used by the Chrome OS EC with a > + built-in Type-C port manager and external Type-C Port Controller > + (TCPC). The cros-ec-ucsi driver supports the USB Type-C Connector > + System Software (UCSI) interface used by the Chrome OS EC when the > + platform has a separate power delivery controller (PDC). The node for > + this device should be under a cros-ec node like google,cros-ec-spi. > =20 > properties: > compatible: > - const: google,cros-ec-typec > + enum: > + - google,cros-ec-typec > + - google,cros-ec-ucsi > =20 > '#address-cells': > const: 1 > --=20 > 2.53.0.1213.gd9a14994de-goog >=20 --jztD/bANTVs+KmqZ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQCtZK6p/AktxXfkOlzbaomhzOwwgUCadBDGQAKCRBzbaomhzOw wnQEAQDeE//xnq+IhVlSfGC0hc1ZyoqA+HBIw3N1qF61jTIvRQD+JHkGa1XhuFXF 01WwG0Rcho+Je8H6Omm0n/driIMIpwM= =vw5y -----END PGP SIGNATURE----- --jztD/bANTVs+KmqZ--