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Message-Id: <20220614193558.1163205-4-pmalani@chromium.org>
Date: Tue, 14 Jun 2022 19:34:37 +0000
From: Prashant Malani <pmalani@...omium.org>
To: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc: bleung@...omium.org, swboyd@...omium.org,
heikki.krogerus@...ux.intel.com,
Prashant Malani <pmalani@...omium.org>,
Nícolas F . R . A . Prado
<nfraprado@...labora.com>, Andrzej Hajda <andrzej.hajda@...el.com>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...ux.ie>,
devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
DEVICE TREE BINDINGS),
dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hsin-Yi Wang <hsinyi@...omium.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Jonas Karlman <jonas@...boo.se>,
José Expósito <jose.exposito89@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Maxime Ripard <maxime@...no.tech>,
Neil Armstrong <narmstrong@...libre.com>,
Pin-Yen Lin <treapking@...omium.org>,
Robert Foss <robert.foss@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Sam Ravnborg <sam@...nborg.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
Xin Ji <xji@...logixsemi.com>
Subject: [PATCH v3 3/7] dt-bindings: usb: Add Type-C switch binding
Introduce a binding which represents a component that can control the
routing of USB Type-C data lines as well as address data line
orientation (based on CC lines' orientation).
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Signed-off-by: Prashant Malani <pmalani@...omium.org>
---
Changes since v2:
- Added Reviewed-by and Tested-by tags.
Changes since v1:
- Removed "items" from compatible.
- Fixed indentation in example.
.../devicetree/bindings/usb/typec-switch.yaml | 74 +++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/typec-switch.yaml
diff --git a/Documentation/devicetree/bindings/usb/typec-switch.yaml b/Documentation/devicetree/bindings/usb/typec-switch.yaml
new file mode 100644
index 000000000000..78b0190c8543
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/typec-switch.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/typec-switch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: USB Type-C Switch
+
+maintainers:
+ - Prashant Malani <pmalani@...omium.org>
+
+description:
+ A USB Type-C switch represents a component which routes USB Type-C data
+ lines to various protocol host controllers (e.g USB, VESA DisplayPort,
+ Thunderbolt etc.) depending on which mode the Type-C port, port partner
+ and cable are operating in. It can also modify lane routing based on
+ the orientation of a connected Type-C peripheral.
+
+properties:
+ compatible:
+ const: typec-switch
+
+ mode-switch:
+ type: boolean
+ description: Specify that this switch can handle alternate mode switching.
+
+ orientation-switch:
+ type: boolean
+ description: Specify that this switch can handle orientation switching.
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ description: OF graph binding modelling data lines to the Type-C switch.
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Link between the switch and a Type-C connector.
+
+ required:
+ - port@0
+
+required:
+ - compatible
+ - ports
+
+anyOf:
+ - required:
+ - mode-switch
+ - required:
+ - orientation-switch
+
+additionalProperties: true
+
+examples:
+ - |
+ drm-bridge {
+ usb-switch {
+ compatible = "typec-switch";
+ mode-switch;
+ orientation-switch;
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ anx_ep: endpoint {
+ remote-endpoint = <&typec_controller>;
+ };
+ };
+ };
+ };
+ };
--
2.36.1.476.g0c4daa206d-goog
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