LTE-A EP06 Mini PCIe (EP06ELA-512-SGA) - Linux kernel 5.15

IoT Modules LTE-A Module
1

Hello,

I try to set up the EP06ELA-512-SGA module on a Linux kernel 5.15.
I tried the Quectel EC25-E PCI-e module without any problem (with a new USB device on the system).
With the new EP06ELA-512-SGA module, there is no PCI/USB device detected on the system.
What are the requirements to setup this card on a Linux system?

Thanks,
Emeric

2

Show the output of cat /sys/kernel/debug/usb/devices

3 
# cat /sys/kernel/debug/usb/devices

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480  MxCh=16
B:  Alloc=  0/800 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev= 5.15
S:  Manufacturer=Linux 5.15.0-69-generic xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:00:14.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 8
B:  Alloc=  0/800 us ( 0%), #Int=  0, #Iso=  0
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev= 5.15
S:  Manufacturer=Linux 5.15.0-69-generic xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:00:14.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms
4

I just can see an additional PCI device:
00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #9 (rev f1)

5

Well, you definitely have no modem USB device, so I suggest to check physical connections, power, etc.

What you can also do: disconnect your modem (adapter) from the host system, run dmesg -w then plug it back.

6

image
image1889×599 173 KB

Left side, without the PCI card, and the right side with it

7

Never asked about PCI. Please do no use pictures.
How exactly this modem is connected to the host system? Are you using an external USB adapter or the PCIe connector is a part of the host system?

8

The modem card is directly plugged on a mini PCI-e slot

9

I have another Quectel EC25-E PCI-e card that works perfectly on the same PCI-e slot

10

Remove the modem and isolate USB3 pins on it, then put it back with the hope.
I assume that you tested EC25 in the same slot, so you’re confident that USB lines are there.

11

Hmmm, ok I will need to find the card documentation to perform this operation…