linux-kernel - Re: [PATCH v5 14/32] dt-bindings: usb: xhci: Add num-hc-interrupters definition

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Message-ID: <20230831172220.GA2460067-robh@kernel.org>
Date:   Thu, 31 Aug 2023 12:22:20 -0500
From:   Rob Herring <robh@...nel.org>
To:     Wesley Cheng <quic_wcheng@...cinc.com>
Cc:     srinivas.kandagatla@...aro.org, mathias.nyman@...el.com,
        perex@...ex.cz, lgirdwood@...il.com, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, gregkh@...uxfoundation.org,
        Thinh.Nguyen@...opsys.com, broonie@...nel.org,
        bgoswami@...cinc.com, tiwai@...e.com, agross@...nel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-usb@...r.kernel.org, quic_jackp@...cinc.com,
        quic_plai@...cinc.com
Subject: Re: [PATCH v5 14/32] dt-bindings: usb: xhci: Add num-hc-interrupters
 definition

On Tue, Aug 29, 2023 at 02:06:39PM -0700, Wesley Cheng wrote:
> Add the definition for how many interrupts the XHCI host controller should
> allocate.  XHCI can potentially support up to 1024 interrupters, which
> implementations may want to limit.
> 
> Signed-off-by: Wesley Cheng <quic_wcheng@...cinc.com>
> ---
>  Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> index 180a261c3e8f..2c05757cef01 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> @@ -29,6 +29,10 @@ properties:
>      description: Interrupt moderation interval
>      default: 5000
>  
> +  num-hc-interrupters:
> +    description: Maximum number of interrupters to allocate
> +    $ref: /schemas/types.yaml#/definitions/uint16

minimum: 1
maximum: 1024

> +
>  additionalProperties: true
>  
>  examples: