linux-kernel - Re: [PATCH] USB: serial: option: add Foxconn T99W760

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Message-ID: <aSR_ledly9vxJs0K@hovoldconsulting.com>
Date: Mon, 24 Nov 2025 16:53:57 +0100
From: Johan Hovold <johan@...nel.org>
To: Slark Xiao <slark_xiao@....com>
Cc: gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: serial: option: add Foxconn T99W760

On Tue, Nov 18, 2025 at 02:45:28PM +0800, Slark Xiao wrote:
> T99W760 is designed based on Qualcomm SDX35(5G redcap) chip. There
> are 3 serial ports to be enumerated: Modem, NMEA and Diag.
> 
> test evidence as below:
> T:  Bus=03 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  4 Spd=5000  MxCh= 0
> D:  Ver= 3.20 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=0489 ProdID=e123 Rev=05.15
> S:  Manufacturer=QCOM
> S:  Product=SDXBAAGHA-IDP _SN:39A8D3E4
> S:  SerialNumber=39a8d3e4
> C:  #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
> E:  Ad=82(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
> E:  Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> I:  If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
> E:  Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=83(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
> I:  If#= 3 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
> E:  Ad=85(I) Atr=03(Int.) MxPS=  64 Ivl=32ms
> I:  If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
> E:  Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=86(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=87(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
> I:  If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
> E:  Ad=04(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> E:  Ad=88(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
> 
> 0&1: MBIM, 2:Modem, 3:GNSS(non-serial port), 4: NMEA, 5:Diag
> 
> Signed-off-by: Slark Xiao <slark_xiao@....com>

Applied, thanks.

Johan