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Date:   Thu, 7 Oct 2021 09:47:27 +0200
From:   Johan Hovold <johan@kernel.org>
To:     Yu-Tung Chang <mtwget@gmail.com>
Cc:     gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1] USB: serial: option: add Quectel EC200S-CN module
 support
Message-ID: <YV6mD02BVLXXcTr8@hovoldconsulting.com>
References: <20210930021112.330396-1-mtwget@gmail.com>
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On Thu, Sep 30, 2021 at 10:11:12AM +0800, Yu-Tung Chang wrote:
> Add usb product id of the Quectel EC200S-CN module.
> 
> usb-devices output for 0x6002:
> T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  3 Spd=480 MxCh= 0
> D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=2c7c ProdID=6002 Rev=03.18
> S:  Manufacturer=Android
> S:  Product=Android
> S:  SerialNumber=0000
> C:  #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA
> I:  If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether
> I:  If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether
> I:  If#=0x2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
> I:  If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
> I:  If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)

Looks good now, but for completeness, could you also mention here what
the three ports are used for (and which is which)?

Johan