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Date: Wed, 31 Jan 2024 15:37:24 -0600
From: Rob Herring <robh@kernel.org>
To: Javier Carrasco <javier.carrasco@wolfvision.net>
Cc: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Matthias Kaehlcke <mka@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH 1/2] ASoC: dt-bindings: xmos,xvf3500: add XMOS XVF3500
 voice processor
Message-ID: <20240131213724.GA2334002-robh@kernel.org>
References: <20240130-onboard_xvf3500-v1-0-51b5398406cb@wolfvision.net>
 <20240130-onboard_xvf3500-v1-1-51b5398406cb@wolfvision.net>
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In-Reply-To: <20240130-onboard_xvf3500-v1-1-51b5398406cb@wolfvision.net>

On Tue, Jan 30, 2024 at 01:26:56PM +0100, 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.
> 
> [1] https://www.xmos.com/xvf3500/
> 
> Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.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..d7d5bda23b1b
> --- /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@wolfvision.net>
> +
> +description:
> +  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: usb20b1,0013
> +
> +  reset-gpios:
> +    maxItems: 1
> +
> +  vdd-supply:
> +    description:
> +      Regulator for the 1V0 supply.
> +
> +  vdd2-supply:
> +    description:
> +      Regulator for the 3V3 supply.
> +
> +required:
> +  - compatible
> +  - reset-gpios
> +  - vdd-supply
> +  - vdd2-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    xvf3500 {
> +      compatible = "usb20b1,0013";
> +      reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
> +      vdd-supply = <&vcc1v0>;
> +      vdd2-supply = <&vcc3v3>;
> +    };

A USB device should hang off a USB hub (or root hub). Looks like you 
just have a random node here. You should also have a $ref to 
usb-device.yaml. You'll see you need a reg property for example.

Rob