linux-kernel - Re: [PATCH 2/2] dt-bindings: usb: document snps,dis_split

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Date:   Thu, 16 Dec 2021 11:26:29 +0300
From:   Sergey Shtylyov <s.shtylyov@....ru>
To:     Yaqin Pan <akingchen@...o.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Felipe Balbi <balbi@...nel.org>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <kernel@...o.com>
Subject: Re: [PATCH 2/2] dt-bindings: usb: document snps,dis_split_quirk
 property in dwc3

On 15.12.2021 16:03, Yaqin Pan wrote:

> Add snps,dis_split_quirk property for dwc3 controller
> 
> Signed-off-by: Yaqin Pan <akingchen@...o.com>
> ---
>   Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> index 41416fbd92aa..e9615ca8f447 100644
> --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> @@ -226,6 +226,12 @@ properties:
>         avoid -EPROTO errors with usbhid on some devices (Hikey 970).
>       type: boolean
>   
> +  snps,dis_split_quirk:
> +    description:
> +      When set, change the way host controller schedules transations for a Control transfer.

    Transactions.

> +      Needed to avoid emurate some devices fail.

    Avoid failing to enumerating some devices?

[...]

MBR, Sergey