linux-kernel - Re: [PATCH 1/3] dt-bindings: usb: Add fsl,ls-dwc3.yaml for layerscape usb3 glue layer

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Message-ID: <2bed7dbe-1f43-4560-b9df-f9df8bf6fc9d@kernel.org>
Date: Fri, 12 Jul 2024 11:24:42 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Frank Li <Frank.Li@....com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Thinh Nguyen
 <Thinh.Nguyen@...opsys.com>, Shawn Guo <shawnguo@...nel.org>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 imx@...ts.linux.dev
Subject: Re: [PATCH 1/3] dt-bindings: usb: Add fsl,ls-dwc3.yaml for layerscape
 usb3 glue layer

On 11/07/2024 01:02, Frank Li wrote:
> Add fsl,ls-dwc3.yaml for layerscape usb3 glue layer.
> 
> Layerscape supports DMA coherent bus fabric. It needs to pass down a
> software-managed property to the DWC3 core.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
>  .../devicetree/bindings/usb/fsl,ls-dwc3.yaml       | 50 ++++++++++++++++++++++
>  1 file changed, 50 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/fsl,ls-dwc3.yaml b/Documentation/devicetree/bindings/usb/fsl,ls-dwc3.yaml
> new file mode 100644
> index 0000000000000..e79416122d12b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/fsl,ls-dwc3.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/fsl,ls-dwc3.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale layerscape DWC3 USB controller
> +
> +maintainers:
> +  - Frank Li <Frank.Li@....com>
> +
> +properties:
> +  compatible:
> +    const: fsl,ls1028a-dwc3

Responding also here, so Greg won't pick it up: as Rob explained,
without reg this is an useless placeholder/wrapper, so instead go
without the wrapper node.

Best regards,
Krzysztof