linux-kernel - Re: [PATCH 01/11] dt-bindings: usb: mtk-xhci: add support property 'tpl-support'

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Message-ID: <YQ2dkcKiXxIHLCOT@robh.at.kernel.org>
Date:   Fri, 6 Aug 2021 14:37:37 -0600
From:   Rob Herring <robh@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Eddie Hung <eddie.hung@...iatek.com>
Subject: Re: [PATCH 01/11] dt-bindings: usb: mtk-xhci: add support property
 'tpl-support'

On Fri, Jul 30, 2021 at 04:49:52PM +0800, Chunfeng Yun wrote:
> Add property 'tpl-support' to support targeted peripheral list
> for USB-IF Embedded Host Compliance Test

Given you have to configure the TPL somehow, how is this useful to be in 
DT? And no, that's not a suggestion to put all the TPL config into DT.

> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
>  Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> index 240882b12565..49729aab6d1a 100644
> --- a/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml
> @@ -115,6 +115,8 @@ properties:
>  
>    usb2-lpm-disable: true
>  
> +  tpl-support: true
> +
>    imod-interval-ns:
>      description:
>        Interrupt moderation interval value, it is 8 times as much as that
> -- 
> 2.18.0
> 
>