linux-kernel - RE: [PATCH v3 4/5] dt-bindings: phy: realtek: Add the doc about the Realtek SoC USB 2.0 PHY

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Message-ID: <0c405afedbcf4e468add480399775ebd@realtek.com>
Date:   Thu, 8 Jun 2023 07:47:21 +0000
From:   Stanley Chang[昌育德] 
        <stanley_chang@...ltek.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Ray Chi <raychi@...gle.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Flavio Suligoi <f.suligoi@...m.it>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: RE: [PATCH v3 4/5] dt-bindings: phy: realtek: Add the doc about the Realtek SoC USB 2.0 PHY

Hi Krzysztof,


> > +      For most Relatek SoCs, one XHCI controller only support one the USB
> 2.0
> > +      phy. For RTD1395 SoC, the one XHCI controller has two USB 2.0
> PHYs.
> > +    properties:
> > +      realtek,page0-param:
> > +        description: PHY parameter at page 0. The data are the pair of
> the
> > +          offset and value.
> 
> This needs to be specific. What the heck is "PHY parameter"?
> 
It contains more parameters
page0 has 16 parameters
page1 has 8 parameters
page2 has 8 parameters
It's tedious if we list them all.
And we only set the part that differs from the default.
It's hard to explain which parameters were changed because each platform is different.

Thanks,
Stanley