linux-kernel - Re: [RFC PATCH v2 1/3] dt-bindings: usb: mtk-xhci: add compatible for mt8195

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Message-ID: <20210210215829.GA2868150@robh.at.kernel.org>
Date:   Wed, 10 Feb 2021 15:58:29 -0600
From:   Rob Herring <robh@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>, linux-usb@...r.kernel.org,
        Ikjoon Jang <ikjn@...omium.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devicetree@...r.kernel.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2 1/3] dt-bindings: usb: mtk-xhci: add compatible
 for mt8195

On Wed, 03 Feb 2021 18:26:40 +0800, Chunfeng Yun wrote:
> There are 4 USB controllers on MT8195, the controllers (IP1~IP3,
> exclude IP0) have a wrong default SOF/ITP interval which is
> calculated from the frame counter clock 24Mhz by default, but
> in fact, the frame counter clock is 48Mhz, so we should set
> the accurate interval according to 48Mhz. Here add a new compatible
> for MT8195, it's also supported in driver. But the first controller
> (IP0) has no such issue, we prefer to use generic compatible,
> e.g. mt8192's compatible.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
> v2: no changes
> ---
>  Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.txt | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring <robh@...nel.org>