| Message ID | 20231208-topic-sm8650-upstream-wcd939x-usbss-v1-1-91d1ba680fe0@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | usb: typec: support Qualcomm WCD939X USB SubSystem Altmode Mux | expand |
On 08/12/2023 16:27, Neil Armstrong wrote: > 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 | 99 ++++++++++++++++++++++ > 1 file changed, 99 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml > new file mode 100644 > index 000000000000..da86b1d119d4 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml > @@ -0,0 +1,99 @@ > +# 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: | Do not need '|' unless you need to preserve formatting. > + 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. Please wrap at 80. In other descriptions as well. > + 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: true This is the only GPIO from common GPIOs which actually needs maxItems. Please add maxItems: 1 Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml new file mode 100644 index 000000000000..da86b1d119d4 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/qcom,wcd939x-usbss.yaml @@ -0,0 +1,99 @@ +# 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: true + + 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 | 99 ++++++++++++++++++++++ 1 file changed, 99 insertions(+)