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ASoC: dt-bindings: document wcd937x Audio Codec
Document the Qualcomm WCD9370/WCD9375 Audio Codec and the Soundwire devices than can be found on Qualcomm QCM6490 based platforms. The Qualcomm WCD9370/WCD9375 Audio Codec communicates with the host SoC over 2 Soundwire links to provide: - 3 TX ADC paths with 4 differential AMIC inputs - 6 DMIC inputs that are shared with AMIC input - 4 Microphone BIAS - RX paths with 4 PAs – HPHL/R, EAR and AUX - Stereo Headphone output - MBHC engine for Headset Detection Signed-off-by: Prasad Kumpatla <quic_pkumpatl@quicinc.com> Co-developed-by: Mohammad Rafi Shaik <quic_mohs@quicinc.com> Signed-off-by: Mohammad Rafi Shaik <quic_mohs@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240524035535.3119208-2-quic_mohs@quicinc.com Signed-off-by: Mark Brown <broonie@kernel.org>
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Prasad Kumpatla
Mark Brown
parent
a1708fda93
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/qcom,wcd937x-sdw.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm SoundWire Slave devices on WCD9370/WCD9375
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maintainers:
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- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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description: |
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Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC.
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It has RX and TX Soundwire slave devices. This bindings is for the
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slave devices.
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properties:
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compatible:
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const: sdw20217010a00
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reg:
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maxItems: 1
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qcom,tx-port-mapping:
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description: |
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Specifies static port mapping between device and host tx ports.
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In the order of the device port index which are adc1_port, adc23_port,
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dmic03_mbhc_port, dmic46_port.
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Supports maximum 4 tx soundwire ports.
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WCD9370 TX Port 1 (ADC1) <=> SWR2 Port 2
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WCD9370 TX Port 2 (ADC2, 3) <=> SWR2 Port 2
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WCD9370 TX Port 3 (DMIC0,1,2,3 & MBHC) <=> SWR2 Port 3
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WCD9370 TX Port 4 (DMIC4,5,6,7) <=> SWR2 Port 4
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 4
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maxItems: 4
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items:
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enum: [1, 2, 3, 4]
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qcom,rx-port-mapping:
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description: |
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Specifies static port mapping between device and host rx ports.
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In the order of device port index which are hph_port, clsh_port,
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comp_port, lo_port, dsd port.
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Supports maximum 5 rx soundwire ports.
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WCD9370 RX Port 1 (HPH_L/R) <==> SWR1 Port 1 (HPH_L/R)
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WCD9370 RX Port 2 (CLSH) <==> SWR1 Port 2 (CLSH)
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WCD9370 RX Port 3 (COMP_L/R) <==> SWR1 Port 3 (COMP_L/R)
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WCD9370 RX Port 4 (LO) <==> SWR1 Port 4 (LO)
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WCD9370 RX Port 5 (DSD_L/R) <==> SWR1 Port 5 (DSD)
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 5
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maxItems: 5
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items:
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enum: [1, 2, 3, 4, 5]
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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soundwire@3210000 {
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reg = <0x03210000 0x2000>;
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#address-cells = <2>;
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#size-cells = <0>;
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wcd937x_rx: codec@0,4 {
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compatible = "sdw20217010a00";
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reg = <0 4>;
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qcom,rx-port-mapping = <1 2 3 4 5>;
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};
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};
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soundwire@3230000 {
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reg = <0x03230000 0x2000>;
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#address-cells = <2>;
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#size-cells = <0>;
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wcd937x_tx: codec@0,3 {
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compatible = "sdw20217010a00";
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reg = <0 3>;
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qcom,tx-port-mapping = <2 2 3 4>;
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};
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};
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...
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82
Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
Normal file
82
Documentation/devicetree/bindings/sound/qcom,wcd937x.yaml
Normal file
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@ -0,0 +1,82 @@
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/qcom,wcd937x.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm WCD9370/WCD9375 Audio Codec
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maintainers:
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- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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description:
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Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC.
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It has RX and TX Soundwire slave devices.
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allOf:
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- $ref: dai-common.yaml#
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- $ref: qcom,wcd93xx-common.yaml#
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properties:
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compatible:
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oneOf:
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- const: qcom,wcd9370-codec
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- items:
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- const: qcom,wcd9375-codec
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- const: qcom,wcd9370-codec
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vdd-px-supply:
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description: A reference to the 1.8V I/O supply
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required:
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- compatible
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- vdd-px-supply
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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codec {
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compatible = "qcom,wcd9370-codec";
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pinctrl-names = "default", "sleep";
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pinctrl-0 = <&wcd_reset_n>;
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pinctrl-1 = <&wcd_reset_n_sleep>;
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reset-gpios = <&tlmm 83 GPIO_ACTIVE_HIGH>;
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vdd-buck-supply = <&vreg_l17b_1p8>;
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vdd-rxtx-supply = <&vreg_l18b_1p8>;
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vdd-px-supply = <&vreg_l18b_1p8>;
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vdd-mic-bias-supply = <&vreg_bob>;
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qcom,micbias1-microvolt = <1800000>;
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qcom,micbias2-microvolt = <1800000>;
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qcom,micbias3-microvolt = <1800000>;
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qcom,micbias4-microvolt = <1800000>;
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qcom,rx-device = <&wcd937x_rx>;
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qcom,tx-device = <&wcd937x_tx>;
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#sound-dai-cells = <1>;
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};
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/* ... */
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soundwire@3210000 {
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reg = <0x03210000 0x2000>;
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#address-cells = <2>;
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#size-cells = <0>;
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wcd937x_rx: codec@0,4 {
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compatible = "sdw20217010a00";
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reg = <0 4>;
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qcom,rx-port-mapping = <1 2 3 4 5>;
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};
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};
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soundwire@3230000 {
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reg = <0x03230000 0x2000>;
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#address-cells = <2>;
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#size-cells = <0>;
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wcd937x_tx: codec@0,3 {
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compatible = "sdw20217010a00";
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reg = <0 3>;
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qcom,tx-port-mapping = <1 2 3 4>;
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};
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};
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...
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