linux-kernel - Re: [PATCH] dt-bindings: usb: dwc3-xilinx: allow dma-coherent

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Message-ID: <20250516-exclusion-suffocate-94a1c87c1262@spud>
Date: Fri, 16 May 2025 15:16:02 +0100
From: Conor Dooley <conor@...nel.org>
To: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
Cc: gregkh@...uxfoundation.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, michal.simek@....com,
	linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	git@....com
Subject: Re: [PATCH] dt-bindings: usb: dwc3-xilinx: allow dma-coherent

On Fri, May 16, 2025 at 06:48:36PM +0530, Radhey Shyam Pandey wrote:
> On Versal Gen 2 SoC the LPD USB DMA controller is coherent with the CPU
> so allow specifying the information.

Sounds like it should actually be marked required on this platform, no?

> 
> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@....com>
> ---
>  Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml b/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> index 379dacacb526..36f5c644d959 100644
> --- a/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> +++ b/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> @@ -26,6 +26,8 @@ properties:
>  
>    ranges: true
>  
> +  dma-coherent: true
> +
>    power-domains:
>      description: specifies a phandle to PM domain provider node
>      maxItems: 1
> 
> base-commit: 8566fc3b96539e3235909d6bdda198e1282beaed
> -- 
> 2.34.1
> 

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