E25 booting, green led flashing on CM3 module

ROCK 3 Series E25
1

I’ve used rbuild to build a bullseye release with a kernel I built via bsp (the latest mainline so I am aware there may be bugs).

My board boots and I’m able to login via serial console (no network as the r8152_dkms would not compile).

There is a green flashing led on the compute module. It flashes quickly twice, then a pause before flashing quickly twice again, and this repeats. What does this mean? The main ring of led is a steady blue colour, not very bright.

Can you confirm where the 4 pin power header is:

“DC 5V on 4-pin header”

Is this on the GPIO?

Regarding the GPIO, can you confirm the order of the pins, it’s not marked on the board.

Thanks!

2

One further question - for power and serial over usb-c, do you have any recommended hubs? Anything I try doesn’t work for serial, I only get power. My host machine just shows

ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
ch341 5-2:1.0: device disconnected

I can power via my usb a-a cable with a usb a-c adapter, but I was concerned it might not be providing enough power.

3

This is the “heartbeat” LED, it means the kernel is running.

4

sorry for the inconvenience. for now, please try this fix
src: Add support for kernel 6.1 or above · awesometic/realtek-r8125-dkms@65f9a57 · GitHub

or you may use this package
GitHub - awesometic/realtek-r8125-dkms: A DKMS package for easy use of Realtek r8125 driver, which supports 2.5 GbE.

you can control the ring of RGB led via /sys/class/leds/rgb:torch/

5

Ah that’s great. Thanks for the info.

I hadn’t noticed it when I had tested with a radxa build.

1 Like
6

Thanks for the link, that is a great help.

It’s no inconvenience, I didn’t expect it to work straight away as the realtek site only mentioned support up to 5.19, so I removed it from the build.

Good to know. I’ll leave it alone just now, the dim blue is nice while the board isn’t in it’s case! :smiley:

7

The updated r8125_dkms worked fine and I’ve got networking on the board now.

However there is only one network interface. I didn’t spot anything immediatly obvious in the logs. I’ve installed the radxa e25 bullseye image (radxa-e25-debian-bullseye-xfce4-arm64-20221028-0509-gpt.img.xz) to check if it was a problem with my kernel/build.

The bullseye image also only has one network interface, but it contains rk-pcie errors:

[    3.716630] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[    3.716792] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    4.729909] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[    4.730934] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    5.743252] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[    6.756724] rk_pcie_establish_link: 1 callbacks suppressed
[    6.756746] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    6.756840] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[    7.769998] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    8.783289] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    8.783423] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[    9.796707] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[    9.796710] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[   10.813366] rk-pcie 3c0400000.pcie: PCIe Linking... LTSSM is 0x0
[   10.813369] rk-pcie 3c0800000.pcie: PCIe Linking... LTSSM is 0x3
[   11.823443] rk-pcie 3c0400000.pcie: PCIe Link Fail
[   11.823532] rk-pcie 3c0400000.pcie: failed to initialize host
[   11.823829] rk-pcie 3c0800000.pcie: PCIe Link Fail
[   11.823855] rk-pcie 3c0800000.pcie: failed to initialize host

I’m digging into this to see what might be causing these errors.

8

i get those same errors in my desmg too…