linux-kernel - Re: [PATCH 2/3] ASoC: dt-bindings: xmos,xvf3500: add bindings for XMOS XVF3500

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Message-ID: <96abddcc-fa65-4f27-84fe-2281fe0fcf1c@wolfvision.net>
Date: Mon, 15 Jan 2024 14:58:26 +0100
From: Javier Carrasco <javier.carrasco@...fvision.net>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
 Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>
Cc: Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org
Subject: Re: [PATCH 2/3] ASoC: dt-bindings: xmos,xvf3500: add bindings for
 XMOS XVF3500

On 15.01.24 14:02, Krzysztof Kozlowski wrote:
> On 15/01/2024 10:16, Javier Carrasco wrote:
>> The XMOS XVF3500 VocalFusion Voice Processor[1] is a low-latency, 32-bit
>> multicore controller for voice processing.
>>
>> Add new bindings to define the device properties.
> 
> I don't see any bus, so how does it work? How do you get the voice data
> from it? I also do not see any DAI: neither here nor in the driver...
> 
The voice data and any other information can be retrieved directly via
USB from userspace. Once in normal operation, the device acts as a
regular "onboard" USB device and the driver does not need to do any
further management.
> If there is going to be any new version, then implement all following
> comments:
> 
> A nit, subject: drop second/last, redundant "bindings for". The
> "dt-bindings" prefix is already stating that these are bindings.
> See also:
> https://elixir.bootlin.com/linux/v6.7-rc8/source/Documentation/devicetree/bindings/submitting-patches.rst#L18
> 
> 
>>
>> [1] https://www.xmos.com/xvf3500/
>>
>> Signed-off-by: Javier Carrasco <javier.carrasco@...fvision.net>
>> ---
>>  .../devicetree/bindings/sound/xmos,xvf3500.yaml    | 51 ++++++++++++++++++++++
>>  1 file changed, 51 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml b/Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml
>> new file mode 100644
>> index 000000000000..e93a735a0f1a
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/sound/xmos,xvf3500.yaml
>> @@ -0,0 +1,51 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/sound/xmos,xvf3500.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: XMOS XVF3500 VocalFusion Voice Processor
>> +
>> +maintainers:
>> +  - Javier Carrasco <javier.carrasco@...fvision.net>
>> +
>> +description: |-
> 
> Do not need '|-' unless you need to preserve formatting.
> 
> 
>> +  The XMOS XVF3500 VocalFusion Voice Processor is a low-latency, 32-bit
>> +  multicore controller for voice processing.
>> +  https://www.xmos.com/xvf3500/
>> +
>> +properties:
>> +  compatible:
>> +    const: xmos,xvf3500
>> +
>> +  reset-gpios:
>> +    maxItems: 1
>> +
>> +  vcc1v0-supply:
>> +    description: |
> 
> Do not need '|' unless you need to preserve formatting.
> 
> 
>> +      Regulator for the 1V0 supply.
>> +
>> +  vcc3v3-supply:
>> +    description: |
> 
> Do not need '|' unless you need to preserve formatting.
> 
>> +      Regulator for the 3V3 supply.
>> +
>> +additionalProperties: false
> 
> This goes after required: block.
> 
>> +
>> +required:
>> +  - compatible
>> +  - reset-gpios
>> +  - vcc1v0-supply
>> +  - vcc3v3-supply
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/gpio/gpio.h>
>> +
>> +    xvf3500: voice-processor {
> 
> Drop unused label.
> 
> 
> 
> Best regards,
> Krzysztof
> 
Thank you for your feedback and best regards,
Javier Carrasco