linux-kernel - Re: [PATCH] dt-bindings: usb: dwc3: xilinx: Add interrupt-names to include hibernation interrupt

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Message-ID: <20230418184026.GA2099329-robh@kernel.org>
Date:   Tue, 18 Apr 2023 13:40:26 -0500
From:   Rob Herring <robh@...nel.org>
To:     Piyush Mehta <piyush.mehta@....com>
Cc:     gregkh@...uxfoundation.org, krzysztof.kozlowski+dt@...aro.org,
        michal.simek@...inx.com, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        michal.simek@....com, siva.durga.prasad.paladugu@....com,
        linux-arm-kernel@...ts.infradead.org, git@....com
Subject: Re: [PATCH] dt-bindings: usb: dwc3: xilinx: Add interrupt-names to
 include hibernation interrupt

On Wed, Apr 12, 2023 at 11:38:43AM +0530, Piyush Mehta wrote:
> The hibernation feature enabled for Xilinx Versal NET SoC in DWC3 IP.
> Added host mode interrupts and "usb-wakeup" interrupt-names optional
> property in the binding schema to capture remote-wakeup and connect/
> disconnect event in the hibernation state.
> 
> Xilinx dwc3-core uses "host" and "otg" interrupts interrupt-names DT
> properties from dwc3-core.

Is wakeup really not implemented in the DWC3 core, but outside it? 

> 
> Signed-off-by: Piyush Mehta <piyush.mehta@....com>
> ---
> Note:
> - Xilinx uses dwc3-cores interrupt-names DT property.
>   Link:
>   Xilinx-dwc3 core: https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml#L129
>   dwc3-core: https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/usb/snps%2Cdwc3.yaml#L42
> ---
>  Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml b/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> index 098b73134a1b..abc32db2448a 100644
> --- a/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> +++ b/Documentation/devicetree/bindings/usb/dwc3-xilinx.yaml
> @@ -44,6 +44,15 @@ properties:
>        - const: bus_clk
>        - const: ref_clk
>  
> +  interrupts:
> +    items:
> +      - description: Handle to the line usb-wakeup used to wake
> +          up the host processor.
> +
> +  interrupt-names:
> +    items:
> +      - const: usb-wakeup

'wakeup' is the standard name. And you also need 'wakeup-source' 
property.

> +
>    resets:
>      description:
>        A list of phandles for resets listed in reset-names.
> -- 
> 2.25.1
>