Missing enum? "Get RF Band Information" (0x0031) / "Bandwidth List" (0x12) -> Value 9

[Dan Williams]

On Wed, 2025-02-19 at 13:25 +0100, Martin Maurer wrote:
> Hello,
> 
> first many thanks for all the answers on my previous questions. They 
> were very helpful!
> 
> I just got an answer on the following request:
> 
> qmicli --verbose-full -p -d /dev/cdc-wdm0 --device-open-qmi 
> --nas-get-rf-band-info
> 
> 
> <<<<<< QMUX:
> <<<<<<   length  = 48
> <<<<<<   flags   = 0x80
> <<<<<<   service = "nas"
> <<<<<<   client  = 4
> <<<<<< QMI:
> <<<<<<   flags       = "response"
> <<<<<<   transaction = 1
> <<<<<<   tlv_length  = 36
> <<<<<<   message     = "Get RF Band Information" (0x0031)
> <<<<<< TLV:
> <<<<<<   type       = "Result" (0x02)
> <<<<<<   length     = 4
> <<<<<<   value      = 00:00:00:00
> <<<<<<   translated = SUCCESS
> <<<<<< TLV:
> <<<<<<   type       = "List" (0x01)
> <<<<<<   length     = 6
> <<<<<<   value      = 01:0C:FA:00:DE:93
> <<<<<<   translated = { [0] = '[ radio_interface = '5gnr' 
> active_band_class = 'nr5g-1' active_channel = '37854' ] '}
> <<<<<< TLV:
> <<<<<<   type       = "Extended List" (0x11)
> <<<<<<   length     = 8
> <<<<<<   value      = 01:0C:FA:00:DE:93:06:00
> <<<<<<   translated = { [0] = '[ radio_interface = '5gnr' 
> active_band_class = 'nr5g-1' active_channel = '431070' ] '}
> <<<<<< TLV:
> <<<<<<   type       = "Bandwidth List" (0x12)
> <<<<<<   length     = 6
> <<<<<<   value      = 01:0C:09:00:00:00
> <<<<<<   translated = { [0] = '[ radio_interface = '5gnr' bandwidth =
> '(null)' ] '}
> 
> [/dev/cdc-wdm0] Successfully got RF band info
> Band Information:
>          Radio Interface:   '5gnr'
>          Active Band Class: 'nr5g-1'
>          Active Channel:    '37854'
> Band Information (Extended):
>          Radio Interface:   '5gnr'
>          Active Band Class: 'nr5g-1'
>          Active Channel:    '431070'
> Bandwidth:
>          Radio Interface:   '5gnr'
>          Bandwidth:         '(null)'
> 
> 
> I assume the value 0x00000009 is the bandwidth in "Bandwidth List" 
> (0x12)? It looks like value 9 has no enum?
> 
> But I am sorry, I can't tell yet what value 9 means...

Correct, libqmi doesn't yet have an enum value for 9. I'm going to
guess these are 5G bandwidth values since those can be more than 20Mhz.

Would you be able to run this AT command on the AT port with minicom or
something, while MM is *not* running?

AT+QENG="servingcell"

and report the results?

Thanks,
Dan

> 
> It was outputted by a Quectel RG255C-GL (in 5G SA mode):
> 
> (model name is special, wrong, not final, I don't know, look
> curious...)
> 
> # qmicli -p -d /dev/cdc-wdm0 --device-open-qmi --dms-get-manufacturer
> [/dev/cdc-wdm0] Device manufacturer retrieved:
>          Manufacturer: 'Quectel'
> # qmicli -p -d /dev/cdc-wdm0 --device-open-qmi --dms-get-model
> [/dev/cdc-wdm0] Device model retrieved:
>          Model: '334'
> # qmicli -p -d /dev/cdc-wdm0 --device-open-qmi --dms-get-revision
> [/dev/cdc-wdm0] Device revision retrieved:
>          Revision: 'RG255CGLABR01A08M4G'
> #
> 
> Best regards,
> 
> Martin
> 
> 
>