https://turingpi.com logo
Powered by
#│forum
OKdo ROCK 3 Compute Module (CM3)
# │forum
p

provamer

02/20/2023, 5:43 PM
I bought two Rock 3s from okdo.com I am going to attempt documenting my progress, if I am able to even boot the thing. Jeff Geerling made a video about it: https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/327
# Attempt 1: Rock3's RPi IO board process, usb a-c https://wiki.radxa.com/Rock3/CM/CM3 ## Following steps as if using Raspberry Pi IO Board https://wiki.radxa.com/Rock3/installusb-install-radxa-cm3-rpi-cm4-io 1. Install Radxa drivers, and RKDevTool (https://wiki.radxa.com/Rock3/install/rockchip-flash-tools), download CM3 bootloader (https://dl.radxa.com/rock3/images/loader/rock-3a/rk356x_spl_loader_ddr1056_v1.10.111.bin) 2. Connect CM3 board onto Node 1 slot, connect usb cable from Turing Pi Board to PC 3. in BMC, set USB to 
Device
mode for Node 1 4. in BMC, Power off Node 1 5. Per radxa instructions. Hold down golden button (tiny button next to silver wifi chip), and keep holding 6. in BMC, Power on Node 1, make sure the red power LED is active on the turing pi board 7. After 5 seconds, release the golden button 8. open RKDevTool (NOTE: if the tool is in chinese, open the 
config.ini
file and change 
Selected=2
which is english) 9. RKDevTool should say 
Found one MASK ROM DEVICE
** **Unfortunately for me, RKDevTool could not detect any device
u

_dhanos_

02/20/2023, 6:23 PM
Try to use other node than Node 1. On some boards Node 1 can be tricky to use for flashing
p

provamer

02/20/2023, 6:24 PM
# Attempt 2: Rock3's RPi IO board process, Flashing with Raspberry Pi IO Board (WIP) https://wiki.radxa.com/Rock3/installusb-install-radxa-cm3-rpi-cm4-io I am waiting for my Raspberry Pi IO board to arrive
hmm, I will give this a try
Unfortunately, Node slot 2 doesnt work neither
u

_dhanos_

02/20/2023, 6:28 PM
- Turn off the node power - Set device mode on node 2 - Turn on the node power
Are you doing it this way?
p

provamer

02/20/2023, 6:28 PM
yes
but i was holding down the button
I am not sure what is running on the stock rock3 boards, I was attempting to flash it with a new image
u

_dhanos_

02/20/2023, 6:29 PM
Are you using USB A-A cable?
p

provamer

02/20/2023, 6:30 PM
I have a capture card device with a working usb A-C cable I am repurposing
u

_dhanos_

02/20/2023, 6:31 PM
USB A-C cables rarely work for people and it's not yet known why
p

provamer

02/20/2023, 6:31 PM
that could be another reason why its not working for me as well
u

_dhanos_

02/20/2023, 6:31 PM
Also, if cable is too long, this might be causing issues too
p

provamer

02/20/2023, 6:32 PM
I bought an RPi IO board pending delivery, but I will also look for a USB a-a cable
whats considered too long? I was thinking of getting a 6 foot cable
u

_dhanos_

02/20/2023, 6:42 PM
I'm curious to see the results.
I have about 5 feet long USB A-A cable and have issues flashing
In your case you cannot detect the devices, in my I see them but flashing fails
p

provamer

02/20/2023, 6:43 PM
hmm
u

_dhanos_

02/20/2023, 6:43 PM
My cable is 5 feet long
p

provamer

02/20/2023, 6:43 PM
okay, i will get the 3 foot one
u

_dhanos_

02/20/2023, 6:43 PM
I ordered like super short one to check (25 cm)
p

provamer

02/20/2023, 9:11 PM
@_dhanos_ I went on a little shopping trip. I bought a usb a-a cable (and nvme, and sd card)
unfortunately the cable was 6 feet long
hopefully it would work
Im going to reattempt slot 1
jk, it was a cable with smarts in it. wasnt the correct cable
u

_naphta

02/21/2023, 10:52 AM
low key curious to see how you get on, if we get booting with decent speed networking then I bet for a bunch of us we could get these instead of pi's given they're in stock
w

werdnum

02/23/2023, 6:19 AM
I think I heard/saw somewhere that networking works but PCIe doesn't?
u

_dhanos_

02/23/2023, 6:30 AM
c

colinriddell

04/11/2023, 7:47 PM
Hey @provamer - how did you get on with this?
I got it working. I'll do a write-up
( it doesn't have external IO support, as is already known ) but does have networking
u

_naphta

04/14/2023, 8:11 AM
@colinriddell would you say it's worth investing purely for compute? I only plan on running k8s so.
c

colinriddell

04/14/2023, 11:44 AM
Yeah, purely for compute it could be decent. Looks like Geerling hasn't reported the cpu bench result yet. Presumably someone has though. Will maybe run it if I have some time. I'm led to believe it's not as powerful as CM4. But they don't exist.
u

_naphta

04/14/2023, 12:03 PM
Yeah I can't really find much in the way of benchmarks, network and disk performance would be good to know too
c

colinriddell

04/14/2023, 12:04 PM
agreed.
u

_naphta

04/14/2023, 12:44 PM
basically pits it against the CM3 I think?
t

talliifennec

04/16/2023, 5:06 PM
@colinriddell Did you manage to get the CM3 flashed using the Turing Pi? I've also been fighting with these all weekend and could use a bone right about now! Seems no matter what I do I'm getting hardware-level USB protocol errors. Don't think it's my cable or setup as I have a Jetson TX2 that is identified correctly
c

colinriddell

04/16/2023, 6:00 PM
Hey hey @talliifennec I didn't manage to flash it with Turing Pi, unfortunately. But I did get it flashed with the radxa cm3 IO board. So you'll need to get hold of that to flash the modules. I'll stick a write up somewhere soon but basically I: * Used the Radxa Cm3 IO board to flash an OS to eMMC using the Radxa instructions on their Cm3 IO board guide. ( https://wiki.radxa.com/Rock3/installusb-install-radxa-cm3-io ) * Checked that it booted on the Radxa IO board. It did and had network access. * stuck it into the Tp2 on a CM adaptor board + powered the node. * It booted up the node no problem at all. Found the IP and ssh'ed no problems at all. I was half expecting lots of issues and hacking about - but it was honestly as simple as that.
t

talliifennec

04/17/2023, 5:34 PM
A quick update for those interested- I reviewed the Radxa CM3 IO schematics and the only difference I could tell in the (admittedly very brief) reverse engineering of the Turing Pi's OTG circuitry was that the CM3 IO makes use of a single pin (number 97) on the additional 3rd connector. That pin is the 
USB_OTG0_VBUSDET
pin on the RK3566, which is used to detect whether the USB port should operate as a device or a host. Grounding this pin indicates to the RK3566 that it should operate in device mode. The CM3 IO board uses a 2.7k resistor to accomplish this, but I simply shorted the pin to ground (it is conveniently directly next to pin 99 on the connector, which is a GND), and the device is now showing up using the Turing CM4 Breakout board and Turing Pi with no additional lift. Gonna try flashing as I get time later today, will report back with results!
Got time quicker than I expected. Flashed successfully, took about 8 minutes, and device booted up and appears to be working. I will probably try and come up with a more elegant solution than "short the pins by soldering them together on the connector". FWIW My CM3 is a revision 1.3A.
c

colinriddell

04/17/2023, 7:30 PM
Good idea so, this is flashing with TP2 rather than radxa IO?
Could make a jumper wire to bridge them?
t

talliifennec

04/17/2023, 7:34 PM
Yes, this is just with the TP2 and the CM4 Adapter. I drafted and ordered a PCB on a flex substrate, I think that'll fit between the CM3 and the adapter. Something like so:
It'll take probably a week to get assembled and shipped, but if it works I'll open source the design.
p

provamer

05/03/2023, 9:51 PM
Sorry for being MIA, I have been traveling and moving. I have not set up my turing pi in my new residence. But I will continue with it soon-ish. Thank you for sharing your progress.
u

.quietdreams

06/29/2023, 4:46 PM
Howdy folks. Any further info or documentation on this?
c

colinriddell

07/11/2023, 6:18 PM
What you looking for @.quietdreams ?
5 Views
Powered by