linux-kernel - Re: [PATCH v2 3/8] ASoC: dt-bindings: wcd937x-sdw: add bindings for wcd937x-sdw

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Message-ID: <13bff1dd-d134-e5ab-6691-b2bcb0a786c8@quicinc.com>
Date: Wed, 17 Apr 2024 13:47:00 +0530
From: Mohammad Rafi Shaik <quic_mohs@...cinc.com>
To: Rob Herring <robh@...nel.org>
CC: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami
	<bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>, Mark Brown
	<broonie@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai
	<tiwai@...e.com>, <alsa-devel@...a-project.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-sound@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_rohkumar@...cinc.com>, <quic_pkumpatl@...cinc.com>
Subject: Re: [PATCH v2 3/8] ASoC: dt-bindings: wcd937x-sdw: add bindings for
 wcd937x-sdw

On 4/16/2024 8:02 PM, Rob Herring wrote:
> On Tue, Apr 16, 2024 at 12:05:55PM +0530, Mohammad Rafi Shaik wrote:
>> From: Prasad Kumpatla <quic_pkumpatl@...cinc.com>
>>
>> Qualcomm WCD9370/WCD9375 Codec is a standalone Hi-Fi audio codec IC
>> connected over SoundWire. This device has two SoundWire devices RX and
>> TX respectively.
>> This binding is for those slave devices on WCD9370/WCD9375.
>>
>> Co-developed-by: Mohammad Rafi Shaik <quic_mohs@...cinc.com>
>> Signed-off-by: Mohammad Rafi Shaik <quic_mohs@...cinc.com>
>> Signed-off-by: Prasad Kumpatla <quic_pkumpatl@...cinc.com>
>> ---
>>   .../bindings/sound/qcom,wcd937x-sdw.yaml      | 71 +++++++++++++++++++
>>   1 file changed, 71 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
>> new file mode 100644
>> index 000000000000..2b7358e266ba
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/sound/qcom,wcd937x-sdw.yaml
>> @@ -0,0 +1,71 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/sound/qcom,wcd937x-sdw.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Qualcomm SoundWire Slave devices on WCD9370
>> +
>> +maintainers:
>> +  - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>> +
>> +description: |
> 
> Don't need '|' if no formatting.
> 
>> +  Qualcomm WCD9370 Codec is a standalone Hi-Fi audio codec IC.
>> +  It has RX and TX Soundwire slave devices. This bindings is for the
>> +  slave devices.
>> +
>> +properties:
>> +  compatible:
>> +    const: sdw20217010a00
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  qcom,tx-port-mapping:
>> +    description: |
>> +      Specifies static port mapping between slave and master tx ports.
>> +      In the order of slave port index.
> 
> Are there constraints on the values of the entries?

The port mapping entries are fixed values.
There is no constraints.

Thanks
Rafi
> 
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    minItems: 4
>> +    maxItems: 4
>> +
>> +  qcom,rx-port-mapping:
>> +    description: |
>> +      Specifies static port mapping between slave and master rx ports.
>> +      In the order of slave port index.
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    minItems: 5
>> +    maxItems: 5
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - qcom,port-mapping
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    soundwire@...0000 {
>> +        #address-cells = <2>;
>> +        #size-cells = <0>;
>> +        reg = <0x03210000 0x2000>;
>> +        wcd937x_rx: codec@0,4 {
>> +            compatible = "sdw20217010a00";
>> +            reg  = <0 4>;
>> +            qcom,rx-port-mapping = <1 2 3 4 5>;
>> +        };
>> +    };
>> +
>> +    soundwire@...0000 {
>> +        #address-cells = <2>;
>> +        #size-cells = <0>;
>> +        reg = <0x03230000 0x2000>;
>> +        wcd937x_tx: codec@0,3 {
>> +            compatible = "sdw20217010a00";
>> +            reg  = <0 3>;
>> +            qcom,tx-port-mapping = <2 3 4 5>;
>> +        };
>> +    };
>> +
>> +...
>> -- 
>> 2.25.1
>>