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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/qcom,wcd939x-usbss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm WCD9380/WCD9385 USB SubSystem Altmode/Analog Audio Switch
+
+maintainers:
+ - Neil Armstrong <neil.armstrong@linaro.org>
+
+description:
+ Qualcomm WCD9390/WCD9395 is a standalone Hi-Fi audio codec IC with a
+ functionally separate USB SubSystem for Altmode/Analog Audio Switch
+ accessible over an I2C interface.
+ The Audio Headphone and Microphone data path between the Codec and the
+ USB-C Mux subsystems are external to the IC, thus requiring DT port-endpoint
+ graph description to handle USB-C altmode & orientation switching for Audio
+ Accessory Mode.
+
+properties:
+ compatible:
+ oneOf:
+ - const: qcom,wcd9390-usbss
+ - items:
+ - const: qcom,wcd9395-usbss
+ - const: qcom,wcd9390-usbss
+
+ reg:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+ vdd-supply:
+ description: USBSS VDD power supply
+
+ mode-switch:
+ description: Flag the port as possible handle of altmode switching
+ type: boolean
+
+ orientation-switch:
+ description: Flag the port as possible handler of orientation switching
+ type: boolean
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ A port node to link the WCD939x USB SubSystem to a TypeC controller for the
+ purpose of handling altmode muxing and orientation switching.
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ description:
+ A port node to link the WCD939x USB SubSystem to the Codec SubSystem for the
+ purpose of handling USB-C Audio Accessory Mode muxing and orientation switching.
+
+required:
+ - compatible
+ - reg
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ typec-mux@42 {
+ compatible = "qcom,wcd9390-usbss";
+ reg = <0x42>;
+
+ vdd-supply = <&vreg_bob>;
+
+ mode-switch;
+ orientation-switch;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ wcd9390_usbss_sbu: endpoint {
+ remote-endpoint = <&typec_sbu>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ wcd9390_usbss_codec: endpoint {
+ remote-endpoint = <&wcd9390_codec_usbss>;
+ };
+ };
+ };
+ };
+ };
+...
Document the Qualcomm WCD9390/WCD9395 USB SubSystem Altmode/Analog Audio Switch which is a separate USB SubSystem for Altmode/Analog Audio Switch accessible over an I2C interface. Since Audio Headphone and Microphone data path between the Codec and the USB-C Mux subsystems are external to the IC, it requires a second port to handle USB-C altmode & orientation switching for Audio Accessory Mode to the Codec SubSystem. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> --- .../bindings/usb/qcom,wcd939x-usbss.yaml | 102 +++++++++++++++++++++ 1 file changed, 102 insertions(+)