linux-kernel - Re: [PATCH v3 5/5] dt-bindings: phy: realtek: Add the doc about the Realtek SoC USB 3.0 PHY

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Date:   Thu, 8 Jun 2023 09:50:16 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Stanley Chang[昌育德] 
        <stanley_chang@...ltek.com>,
        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>,
        Mathias Nyman <mathias.nyman@...ux.intel.com>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Matthias Kaehlcke <mka@...omium.org>,
        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 5/5] dt-bindings: phy: realtek: Add the doc about the
 Realtek SoC USB 3.0 PHY

On 08/06/2023 09:32, Stanley Chang[昌育德] wrote:
>>> +examples:
>>> +  - |
>>> +    usb_port2_usb3phy: usb-phy@...10 {
>>> +        compatible = "realtek,rtd1319d-usb3phy", "realtek,usb3phy";
>>> +        reg = <0x13e10 0x4>;
>>> +        #address-cells = <1>;
>>> +        #size-cells = <0>;
>>> +        #phy-cells = <0>;
>>> +
>>> +        phy@0 {
>>> +            reg = <0>;
>>> +            realtek,param =
>>> +                    <0x01 0xac8c>,
>>> +                    <0x06 0x0017>,
>>
>> First, this is matrix, not uint8 array. Second, 0xac8c is past 16 bits long, not 8.
>> Third, you put some magic register programming to DT.
>> Please don't. Drop all this from DT.
> 
> realtek,param is an uint32-matrx.
> I will revised the type.

Drop the property. It is not explained and not justified to be in DT.

Best regards,
Krzysztof