Hi
I have bought the Variscite evaluation kit, so I am using a VAR-SOM-MX8M-PLUS and Symphony board together.
I am using Debian Bullseye OS. Image: imx8mp-var-dart-debian-bullseye-5.10.52-v1.0.img.gz
When de-risking the board and testing all required interfaces. I encountered a problem with the PCI interface (mPCIe connector). I will be using an EG25-G mPCIe cellular module in the project.
Not sure how to continue troubleshooting this. Do you have any solutions/recommendations? Also let me know if there are any other outputs or diagnostics that would be helpful.
I receive no output from lspci when using the Quectel EG25-G, Telit LE910C1-AP, FN-Link 6222D-UUB and when using no mPCIe device.
Thanks heaps in advance.
Diagnostic Messages:
root@CEI:~# dmesg | grep pci
[ 0.173369] imx8-pcie-phy 32f00000.pcie-phy: failed to get imx pcie phy clock
[ 1.747826] imx6q-pcie 33800000.pcie: supply epdev_on not found, using dummy regulator
[ 1.763352] imx6q-pcie 33800000.pcie: EXT REF_CLK is used!.
[ 1.769545] imx6q-pcie 33800000.pcie: PCIe PHY PLL clock is locked.
[ 1.831769] imx6q-pcie 33800000.pcie: PCIe PLL locked after 0 us.
[ 1.842990] imx6q-pcie 33800000.pcie: host bridge /soc@0/pcie@33800000 ranges:
[ 1.855747] imx6q-pcie 33800000.pcie: No bus range found for /soc@0/pcie@33800000, using [bus 00-ff]
[ 1.870637] imx6q-pcie 33800000.pcie: IO 0x001ff80000..0x001ff8ffff -> 0x0000000000
[ 1.886290] imx6q-pcie 33800000.pcie: MEM 0x0018000000..0x001fefffff -> 0x0018000000
[ 1.902093] imx6q-pcie 33800000.pcie: invalid resource
[ 2.911739] imx6q-pcie 33800000.pcie: Phy link never came up
[ 2.917459] imx6q-pcie 33800000.pcie: failed to initialize host
[ 2.923420] imx6q-pcie 33800000.pcie: unable to add pcie port.
Solved! Go to Solution.
The reason for the issue was the the Variscite Symphony board's mPCIe interface doesn't support USB communication, pins 36 and 38 are left un-routed on the carrier board. The mPCIe cellular modules that I was testing with require USB support to function.
The reason for the issue was the the Variscite Symphony board's mPCIe interface doesn't support USB communication, pins 36 and 38 are left un-routed on the carrier board. The mPCIe cellular modules that I was testing with require USB support to function.
Did you identify an alternative LTE module /setup that is compatible ?