linux-kernel - Re: [PATCH v3 11/28] dt-bindings: usb: dwc3: Add snps,num-hc-interrupters definition

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Message-ID: <c6a5b214-7812-25a4-c23c-8e57c0efe3fd@quicinc.com>
Date:   Tue, 29 Aug 2023 00:50:51 -0700
From:   Wesley Cheng <quic_wcheng@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh@...nel.org>
CC:     <srinivas.kandagatla@...aro.org>, <mathias.nyman@...el.com>,
        <perex@...ex.cz>, <broonie@...nel.org>, <lgirdwood@...il.com>,
        <krzysztof.kozlowski+dt@...aro.org>, <agross@...nel.org>,
        <Thinh.Nguyen@...opsys.com>, <bgoswami@...cinc.com>,
        <andersson@...nel.org>, <gregkh@...uxfoundation.org>,
        <tiwai@...e.com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <quic_jackp@...cinc.com>, <quic_plai@...cinc.com>
Subject: Re: [PATCH v3 11/28] dt-bindings: usb: dwc3: Add
 snps,num-hc-interrupters definition



On 8/29/2023 12:42 AM, Krzysztof Kozlowski wrote:
> On 29/08/2023 09:19, Wesley Cheng wrote:
>>>>
>>>> This is a XHCI feature, but the DWC3 design is built in a way that DWC3
>>>> host initializes the XHCI device and populates the properties associated
>>>> to XHCI dev.
>>>
>>> You speak about driver now, not bindings. If driver has limitations,
>>> change it. Not really problem of bindings.
>>>
>>
>> Its the limitation of the HW.  Depending on how the SNPS DWC3 controller
>> was implemented the vendor it can support less than the value mentioned
>> in the Synopsys databook.
> 
> Then what is "XHCI dev"? A Linux device? Then a driver topic. What is
> "populates the properties" - what or whose properties? Of Linux device?
> Then a driver topic...
> 

I will reword it to using XHCI host controller versus using terms like 
device and properties for the next rev.

Thanks
Wesley Cheng