linux-kernel - Re: [PATCH v8 6/9] usb: dwc3: qcom: Add multiport controller support for qcom wrapper

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Date:   Thu, 22 Jun 2023 10:09:13 +0530
From:   Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
To:     Johan Hovold <johan@...nel.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>
CC:     Bjorn Andersson <andersson@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Andy Gross" <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Felipe Balbi <balbi@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "quic_pkondeti@...cinc.com" <quic_pkondeti@...cinc.com>,
        "quic_ppratap@...cinc.com" <quic_ppratap@...cinc.com>,
        "quic_wcheng@...cinc.com" <quic_wcheng@...cinc.com>,
        "quic_jackp@...cinc.com" <quic_jackp@...cinc.com>,
        "quic_harshq@...cinc.com" <quic_harshq@...cinc.com>,
        "ahalaney@...hat.com" <ahalaney@...hat.com>
Subject: Re: [PATCH v8 6/9] usb: dwc3: qcom: Add multiport controller support
 for qcom wrapper



On 6/21/2023 1:08 PM, Johan Hovold wrote:
> On Thu, Jun 15, 2023 at 09:08:01PM +0000, Thinh Nguyen wrote:
>> On Thu, Jun 15, 2023, Krishna Kurapati PSSNV wrote:
> 
>>>   How about we add compatible data indicating the number of usb2/usb3 ports.
>>> That way we needn't parse the DT or read xhci registers atleast as a
>>> temporary solution to unblock other patches. Once this series is merged, we
>>> can get back to fixing the port count calculation. Does it seem fine ?
>>>
>>
>> Temporary solution should not involve DT as it's not easily reverted or
>> changed. Just include xhci-ext-caps.h and use the inline function. I
>> think Johan is fine with that. If not, he can provide more feedback.
> 
> Yes, I already suggested that as a quick way forward since it is already
> used this way by the xhci debug driver.
> 
> Johan

Hi Johan, Thinh,

  Pushed a v9 following the above suggestion.

Thanks,
Krishna,