Document the Qualcomm WCD9390/WCD9395 Audio Codec and the Soundwire devices than can be found on Qualcomm SM8650 based platforms. The Qualcomm WCD9390/WCD9395 Audio Codec communicates with the host SoC over 2 Soundwire links to provide: - 4 ADC inputs for up to 5 Analog Microphones - 4 DMIC inputs for up to 8 Digital Microphones - 4 Microphone BIAS - Stereo Headphone output - Mono EAR output - MBHC engine for Headset Detection The WCD9390/WCD9395 IC has separate I2C subsystem for USB-C DP Altmode/Audio Accessory mode Mux which is not documented here but requires port/endpoint graph and properties to handle Altmode/Audio Accessory switch and orientation. Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> --- .../bindings/sound/qcom,wcd939x-sdw.yaml | 69 ++++++++++++++++ .../devicetree/bindings/sound/qcom,wcd939x.yaml | 96 ++++++++++++++++++++++ 2 files changed, 165 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd939x-sdw.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd939x-sdw.yaml new file mode 100644 index 000000000000..67ed7701b5d6 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/qcom,wcd939x-sdw.yaml @@ -0,0 +1,69 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/qcom,wcd939x-sdw.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm SoundWire devices on WCD9390/WCD9395 + +maintainers: + - Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> + +description: | + Qualcomm WCD9390/WCD9395 Codec is a standalone Hi-Fi audio codec IC. + It has RX and TX Soundwire devices. This bindings is for the devices. + +properties: + compatible: + const: sdw20217010e00 + + reg: + maxItems: 1 + + qcom,tx-port-mapping: + description: | + Specifies static port mapping between device and host tx ports. + In the order of the device port index. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 4 + maxItems: 4 + + qcom,rx-port-mapping: + description: | + Specifies static port mapping between device and host rx ports. + In the order of device port index. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 6 + maxItems: 6 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + soundwire@3210000 { + #address-cells = <2>; + #size-cells = <0>; + reg = <0x03210000 0x2000>; + wcd938x_rx: codec@0,4 { + compatible = "sdw20217010e00"; + reg = <0 4>; + qcom,rx-port-mapping = <1 2 3 4 5 6>; + }; + }; + + soundwire@3230000 { + #address-cells = <2>; + #size-cells = <0>; + reg = <0x03230000 0x2000>; + wcd938x_tx: codec@0,3 { + compatible = "sdw20217010e00"; + reg = <0 3>; + qcom,tx-port-mapping = <2 3 4 5>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd939x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd939x.yaml new file mode 100644 index 000000000000..6e76f6a8634f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/qcom,wcd939x.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/qcom,wcd939x.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm WCD9380/WCD9385 Audio Codec + +maintainers: + - Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> + +description: | + Qualcomm WCD9390/WCD9395 Codec is a standalone Hi-Fi audio codec IC. + It has RX and TX Soundwire devices. + The WCD9390/WCD9395 IC has a functionally separate USB-C Mux subsystem + 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. + +allOf: + - $ref: dai-common.yaml# + - $ref: qcom,wcd93xx-common.yaml# + +properties: + compatible: + oneOf: + - const: qcom,wcd9390-codec + - items: + - const: qcom,wcd9395-codec + - const: qcom,wcd9390-codec + + mode-switch: + description: Flag the port as possible handler of altmode switching + type: boolean + + orientation-switch: + description: Flag the port as possible handler of orientation switching + type: boolean + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + A port node to link the WCD939x Codec node to USB MUX subsystems for the + purpose of handling altmode muxing and orientation switching to detect and + enable Audio Accessory Mode. + +required: + - compatible + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + codec { + compatible = "qcom,wcd9390-codec"; + reset-gpios = <&tlmm 32 IRQ_TYPE_NONE>; + #sound-dai-cells = <1>; + qcom,tx-device = <&wcd939x_tx>; + qcom,rx-device = <&wcd939x_rx>; + qcom,micbias1-microvolt = <1800000>; + qcom,micbias2-microvolt = <1800000>; + qcom,micbias3-microvolt = <1800000>; + qcom,micbias4-microvolt = <1800000>; + qcom,hphl-jack-type-normally-closed; + qcom,ground-jack-type-normally-closed; + qcom,mbhc-buttons-vthreshold-microvolt = <75000 150000 237000 500000 500000 500000 500000 500000>; + qcom,mbhc-headphone-vthreshold-microvolt = <50000>; + }; + + /* ... */ + + soundwire@3210000 { + #address-cells = <2>; + #size-cells = <0>; + reg = <0x03210000 0x2000>; + wcd939x_rx: codec@0,4 { + compatible = "sdw20217010e00"; + reg = <0 4>; + qcom,rx-port-mapping = <1 2 3 4 5 6>; + }; + }; + + soundwire@3230000 { + #address-cells = <2>; + #size-cells = <0>; + reg = <0x03230000 0x2000>; + wcd938x_tx: codec@0,3 { + compatible = "sdw20217010e00"; + reg = <0 3>; + qcom,tx-port-mapping = <2 3 4 5>; + }; + }; + +... -- 2.34.1
