linux-kernel - Re: [PATCH] gnss/usb: Add U-blox 8/M8 device id

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Message-ID: <d9f641491ec83c5f96ee547001dd8bd7ed5ae5a6.camel@embedd.com>
Date: Sat, 23 Nov 2024 11:38:42 +0100
From: Daniel Danzberger <dd@...edd.com>
To: Johan Hovold <johan@...nel.org>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gnss/usb: Add U-blox 8/M8 device id

Hi Johan,

this is the lsusb -v output:
--
root@...t1:~# lsusb -v -s  001:002 

Bus 001 Device 002: ID 1546:01a8 u-blox AG - www.u-blox.com u-blox GNSS receiver
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            2 [unknown]
  bDeviceSubClass         0 [unknown]
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1546 u-blox AG - www.u-blox.com
  idProduct          0x01a8 u-blox GNSS receiver
  bcdDevice            3.01
  iManufacturer           1 u-blox AG - www.u-blox.com
  iProduct                2 u-blox GNSS receiver
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x003e
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 [unknown]
      bInterfaceSubClass      2 [unknown]
      bInterfaceProtocol      1 
      iInterface              0 
      CDC Header:
        bcdCDC               1.10
      CDC ACM:
        bmCapabilities       0x02
          line coding and serial state
      CDC Call Management:
        bmCapabilities       0x03
          call management
          use DataInterface
        bDataInterface          1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval             255
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 [unknown]
      bInterfaceSubClass      0 [unknown]
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0001
  Self Powered

--

This is a cat on the device, so you can see it's in fact usb gnss capable:
--
root@...t1:~# cat /dev/gnss0 
$GNTXT,01,01,02,u-blox AG - www.u-blox.com*4E
$GNTXT,01,01,02,HW UBX-M8030 00080000*60
$GNTXT,01,01,02,ROM CORE 3.01 (107888)*2B
$GNTXT,01,01,02,FWVER=SPG 3.01*46
$GNTXT,01,01,02,PROTVER=18.00*11
$GNTXT,01,01,02,GPS;GLO;GAL;BDS*77
$GNTXT,01,01,02,SBAS;IMES;QZSS*49
$GNTXT,01,01,02,GNSS OTP=GPS;GLO*37
$GNTXT,01,01,02,LLC=FFFFFFFF-FFFFFFE3-FFFFFFFF-FFFFFFFF-FFFFFFE9*27
$GNTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*3E
$GNTXT,01,01,02,ANTSTATUS=OK*25
$GNTXT,01,01,02,PF=3DF*49
$GNRMC,,V,,,,,,,,,,N*4D
$GNVTG,,,,,,,,,N*2E
$GNGGA,,,,,,0,00,99.99,,,,,,*56
$GNGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*2E
--

On Tue, 2024-10-29 at 13:03 +0100, Johan Hovold wrote:
> On Sat, Oct 26, 2024 at 09:58:57AM +0200, Daniel Danzberger wrote:
> > Adds support for U-Blox 8 GNSS devices
> 
> Please post the output of lsusb -v (or usb-devices) for this device.
> 
> IIRC this is a USB CDC device, which is already managed by the cdc-acm
> driver.
> 
> Johan
> 

-- 
Regards

Daniel Danzberger
embeDD GmbH, Alter Postplatz 2, CH-6370 Stans