Turing-Pi 2 Evolution (feature request)

Question

Given that we should be starting to see the TPi2 in our hands soon what would people like to see changed in the original design IF WE EVER got a TPi V2 1 Please no comments about the RTC issue that goes without saying Please be positive in the community spirit some ideas I would like to see would be The movement of header ports Power Connector SATA USB3 header away from the front of the broad preferably to the side to aid airflow though the cards installed Dedicated USB header for the CM4 Mode port I could see this of more use on the front of a case Move the reset BMC buttons onto the Back plate at right angle to the broad for easier access from the rear of the case Maybe an ATX version with 6 or 8 nodes PWM fan for system fan Maybe two instead of 1 Maybe also add PWM for the nodes also Forgot that thanks < segabor> Upgraded Ethernet 2 5gb maybe useful depending on the use case I would expect that would almost allow Max throughput of all connected broads currently Maybe mPCIe that supports SPI for LORWAN gateways though not sure how this might be achieved perhaps some small jumper switch POE class 4

wvaske · Answer

Agree with a lot of these Multi gig up link on the switch It s become common enough they should be able to find a well priced switch chip More nodes The TPI1 had seven and is the same for factor with DIMM connectors More PIs please A custom heatsink They know the dimensions very exactly I d like to see a custom heatsink that uses all the space similar to what the Compute Blade Kickstarter is doing

segabor · Answer

Well I love the current hardware but what I feel can be improved a lot is the BIOS Everytime I want to shut down the whole stuff I need to make sure each OS is halted before pressing the Power button Thermal management is it working anyway My Thermaltake case has a big front fan and it has never been rotated a bit Also UART pins could have an attachable PCI cover having an USB female port More nodes would be a big win

srcshelton · Answer

Ability to update the routing of the on board switch for example to route Nodes 1 2 only to NIC1 and Nodes 3 4 only to NIC2 for example Plus a dedicated BMC management port

terarex · Answer

The current switch chip supports tagged and protocol VLANs That might be a way to get what you want TMs hasn t disclosed the feature set they might implement in the new firmware

unjeh · Answer

Maybe remove the fixed mounting nuts make em non fixed on the m2 x 60 spacing to allow for dual sided nvme 22x80 drives without desoldering said nuts

terarex · Answer

+1 for making the mPCIe and M 2 anchor points removable relocatable

terarex · Answer

I d like for Turing Machines to fully debug and fix node1 USB flashing and HDMI I d also like to see the BMC chip updated to the T113 S4 256MB vs 128MB and increase the amount of flash available to the BMC to host dual more full featued boot images

jonathanbennett · Answer

HDMI duplexing of all 4 slots would be really handy for troubleshooting and maintenance

wilsonrighetti · Answer

KVM switch

_dhanos_ · Answer

It kind of has one the USB port But do you mean for video output

wilsonrighetti · Answer

well many people on the chat here ask about video and keyboad mouse We kind of keep saying video only Node 1 but not keyboard with Jetson and blah blah If we have this KVM switch we could just configure which ones will get the inputs outputs But maybe this would impact the lanes used by specific nodes as example node 3 has SATA and others not Maybe new versions of compute modules would also help on this matter

_dhanos_ · Answer

Ok I understand what do you mean now but also can see the challenge here

terarex · Answer

I d be happy with a switchable 5 channel TTL to USB A male adapter Basically a serial KVM Cabling would be a PITA Having 5 USB to TTL UART cable is overkill

_dhanos_ · Answer

The question is if you can use the BMC for this which already has UART connections to all of the nodes

phearzero · Answer

Having the BMC as a node would be useful for upgrading different use cases

terarex · Answer

I guess that works I want a console connection if the BMC uses the tty ports That way maybe they don t step on each other

the_boom_boom · Answer

moar nodes

_dhanos_ · Answer

Oh you never have too many

alastair.q8 · Answer

I d remove one sata port seeing that each node can have an nvme drive Two sata ports seems like overkill to me

_dhanos_ · Answer

There s never too many

_dhanos_ · Answer

Also CM4 cannot use M 2 so SATA will be useful

alastair.q8 · Answer

Well Daniel you re special The removal of the one sata port could open space for something else is what I meant to say

_dhanos_ · Answer

Hehehe

_dhanos_ · Answer

When I think of it there s still a lot of space If anything the ports could be stacked the other way opening some space anyway if the team needed this space

_dhanos_ · Answer

People also use 2 ports for data safety drive mirror called RAID1

_dhanos_ · Answer

I only mean 2 SATA oirts are useful

alastair.q8 · Answer

I see your point In my use case I ll have one Pi installed and hopefully two RK1s and an AI accelerator All the nodes except for the Pi will have nvme drives The Pi will be attached to the SATA port I don t need data redundancy I am using this as a learning platform

_dhanos_ · Answer

Yeah I understand But then if you put the board to actual work and you have actual data you care about disk redundancy is rather a must have In my PC I keep file with redundancy for many many years now previously RAO1 off of 2 disks now RAID5 off of 3 disks This is why I would sat the second SATA port is actually useful

alastair.q8 · Answer

True about how important your data is to you Well this is the first iteration of the retail TPi2 and the team might release more SKUs that are more tailored to specific use cases The issue is that the more features are added on this size board the more complicated the construction of it gets Not saying it will definitely lead to more issues but chances are they will At the end of the day I want something reliable which it is easy to forget is an intrinsic feature we all want

srcshelton · Answer

There s much to learn from the TP2 but given the time it takes to make major design changes and the sheer cost I d expect the next revision will be TP3 RPi CM5 on the assumption that the RKx boards don t become the primary use case

cguijt · Answer

My 2 cents if the earlier mentioned KVM is unavailable move the USB3 controller to node 1 so that at least one node has HDMI + USB access

_dhanos_ · Answer

While this is a valid idea if you want a USB right now you can get a Mini PCIe USB controller having a Mini PCIe for node 1 give you options what do you want to have connected to the Node 1

cguijt · Answer

I m aware the idea I mentioned was purely to prevent the need of such controller if you only need it occasionally like installing a Jetson module

_dhanos_ · Answer

Sure just making sure you are aware about this possibility

dethtungue · Answer

Yes please If HDMI Duplexing is not an option having connected USB ports on the same node as the HDMI interface is a must have Otherwise we all have to source and then swap in out mini PCIe USB adapters

the_boom_boom · Answer

if you ve populated node4 then you could use use usbip to give node1 access to the usb ports

scienceman. · Answer

An Aspeed or other server class BMC chip please It will make it much easier to develop code implement useful features etc

goatherder. · Answer

Whilst the UART connectors and the sd card connections are really important it would be cool if there was a header block with cable that you attach so you expose these interfaces on the outside of a case So you do not have to crack the case everytime you need to interface to it

srcshelton · Answer

I ve been trying to find a PCI bracket with Female Female pass through USB connectors so that a UART USB cable could be used internally and a USB A A cable externally although I ve not found anything suitable yet I have found UART DB 9 PCI brackets which could be used for an old skool serial setup I guess the other option would be a UART RJ 45 face plate I ve not looked for PCI brackets with an SD slot but I have an SD extension ribbon cable installed in my system meaning I have to crack open the case but not unmount the mainboard to get to the BMC SD card which feels good enough for now

cfsworks · Answer

This one s a low hanging fruit idea for a future minor revision if the node control GPIOs ` EN RST USB VBUS RPIBOOT 4` can be moved out to a GPIO expander e g PCA9555 on I²C that would free up 16 pins for other purposes including running RGMII to ~~the RTL8201F~~ a GbE PHY so we get 1Gbps to the BMC instead of 100Mbps

schraubersimmie · Answer

For future IO shields If you don t put the cutouts in the normal mounting position but raise them by 20 mm They still fit in the slot cover and it would allow to mount the TP2 board raised in every case to make space for NVMe SSD with coolers

maarten morinsights.nl · Answer

BMC ability to somehow send a soft shutdown via power button command to the nodes Instead of a hard Node Power Off via the power control only being available Please

rexter0 · Answer

Give a lot more focus to the ability to flash nodes There should be no requirement to swap cards in and out just to do flashing or direct node management 1 BMC should have access to nvme cards so one could flash from bms to all for nvme drives 2 KVM switch to switch keyboard mouse monitor between each node again controlled via bms 3 Put the display type switch in BMC config file so one can switch in software

acelink.io · Answer

Move all USB connectors to USB type C Death to microUSB TypeA should be EoL

srcshelton · Answer

It d be great on a per Node basis to expose at least GPIO pins 5V GND and something like GPIO18 to drive a 5V PWM fan under software OS control Due to the positioning of my case fan I ve got passive heatsinks on Nodes 1 3 but then a PWM fan on Node 4 which is controlled via software and Node 1 s GPIO PWM output based on a daemon process running on Node 1 and a simple REST interface on Node 4 which reports the current temperature This does mean that Node 4 only receives temperature dependent cooling when Node 1 is running of course

teslamax · Answer

perhaps an I²C PWM fan controller

teslamax · Answer

I think someone mentioned the possibility of a new CM4 adapter design that also included such an option but I have no idea if it might ever become reality

scienceman. · Answer

I think in addition to the excellent suggestions by < rexter0> above that making the existing 2 pin main board fan connector into a 4 pin one with speed signals controlled by a temperature sensor on the switch heat sink would make sense since that is the hottest part of the current board

dkryptlive · Answer

I agree with this don t take away our sata more sata please Or at least figure out a way to get the RPi to work with one of these https a co d 7b78WgM

terarex · Answer

This appears to be the same device https a co d 93wWl58 It s based on the ASM1166 controller Best case if it works on a generic CM4 carrier would be to use it for HDD connectivity Performance with the RPi 4 s single PCIe Gen 2 lane wouldn t take proper advantage of SSDs If you need SATA ports for node1 and node2 Look for this mPCIe card It s based on the ASM1064 and works with CM4 and Jetson modules I assume it will work with the RK1 Cablecc Mini PCI E PCI Express to https www amazon com dp B0C3CMH6B8 ref=ppx pop mob ap share

dkryptlive · Answer

Thanks for the reply For my project don t need full ssd speed Looking to use one of the CM4 s to run a NAS That adapter looks promising but I need more than four SATA ports I could always use a multiplier for the existing two sata on Node 3 but looking for something more elegant another option I ve considered is using a mini pcie to pcie riser then a proper pcie sata card Mini PCIe Riser https a co d iqGD7Le PCIe SATA https a co d ikGQ2aI

_dhanos_ · Answer

A port multiplier is going to work as well as the module you initially mentioned you wanted to use

_dhanos_ · Answer

The reason for this is a speed limit of the PCIe lane that the CM4 can use

_dhanos_ · Answer

This is exactly what I m using I m yet to test it well but the initial test shows I can easily saturate the 1 Gb s of the network speed https discord com channels 754950670175436841 1030129990211219486 1091312860304511107

cbmdk · Answer

did you get this to work just got 2 boards as well

.mvcs · Answer

Hi there I m considering connecting an old 12v FAN Molex 2510 4PIN I have to the TP2 FAN see the image Plugging the FAN using the 2 middle pins turns the FAN on full blast The thing is I want to be able to control the FAN using the PWM wire Does anybody knows if it s possible to connect the blue wire PWM I suppose to the GPIO 18 on the Node 1 to control the FAN from there I don t mind relying only on the NODE 1 cpu temp I was considering using the python script I saw on this blob post https blog driftking tw en 2019 11 Using Raspberry Pi to Control a PWM Fan and Monitor its Speed Use PWM to Control Fan Speed as a starting point Have anybody tried something like that I m mostly a software guy and I don t know much about the hardware intricacies Is it a stupid thing to do https cdn discordapp com attachments 1090193720294522900 1130148310825586801 Screenshot 2023 07 16 at 16 20 47 png https cdn discordapp com attachments 1090193720294522900 1130148311232413736 IMG 8318 jpg https cdn discordapp com attachments 1090193720294522900 1130148311651848244 IMG 8319 jpg

.mvcs · Answer

well I managed to not fry anything it seems it s working as intended Next step is to buy a proper jump wire to replace this work around

terarex · Answer

If a revised TP2 is made available I have a couple of suggestions regarding physical characteristics The mPCI and M 2 standoffs should not be surface mount soldered They should be removable The current board design has sufficient keep out space around the soldered standoffs to accommodate wafer head screw attachment with Loctite threadlocker blue To save on manufacturing cost the standoffs and screws do not need to be factory installed Including them in a separate bag like the SoM JST fan cables is satisfactory Increase the height of the M 2 connectors on the rear The current connectors appear to be 2mm Why High capacity M 2 NVMe SSDs are double sided and PCIe Gen 4 Gen 5 SSDs require heat sinks with thermal pads The current M 2 connectors and standoffs do not adequately support the underside SSD thickness required for airflow I m going to install 4mm 5mm would be better removable standoffs which should provide sufficient clearance but the SSDs will be angled I don t think I want to tackle the job of reworking a board to desolder the existing and resolder taller M 2 sockets

dkryptlive · Answer

My dream TP Node 1 Main HDMI mini pcie 2x USB ability to flash other 3 nodes Node 2 Router mini pcie w sim 4 external ports 1 WAN 3 LAN 2 5G or 10G would be nice too Node 3 NAS 8 SATA ports 2x USB Node 4 AIML robotics 2x USB 40pin GPIO 2x MIPI CSI 2 Edit all with NVMe

silopolis · Answer

Indeed and I d rather have one SATA per module than none

mvdk85 · Answer

I would want to replace the 1 Gbps switch part with a 2 5Gbps or 10Gbps capable part

_dhanos_ · Answer

Each available module has a network link speed of 1 Gb s so a faster switch is not going to change the max speed you can access the module with but would let you utilize the max speed link of multiple modules at the same time of course

mvdk85 · Answer

I thought that the RK part had a 2 5Gbps capable output

mvdk85 · Answer

as an GMII thing but still

mvdk85 · Answer

Or is this one of the compromises that the S part makes

_dhanos_ · Answer

RK3588 supports up to 1GB s with RGMII

_dhanos_ · Answer

We re not using the S version of RK3588

mvdk85 · Answer

I suppose you could theoretically hook up both GMACs to the same chip as long as it supports LAGs

mvdk85 · Answer

I mean I think there s a RTL chip that would theoretically support that and give you a 10 Gbps uplink I don t know how much more expensive that part would be but I imagine the traces would be hard to find

_dhanos_ · Answer

Possibly but then how LACP works is it won t utilize both links for a single connection just one of them Then how TPi2 is designed is it utilized only a single LAN connection I m not sure if RK1 exposes both

_dhanos_ · Answer

Where did you get the 10Gb s from

mvdk85 · Answer

LAGs allow you to balance flows across them

mvdk85 · Answer

RTL8396L is one part that would theoretically work

_dhanos_ · Answer

Meaning connections You d need multiple at least 2 in this case and hope they both get routed through different interfaces

_dhanos_ · Answer

They still will be 1Gb s links so a total of possible 2Gb s

mvdk85 · Answer

Yeah which is twice the existing capability

cfsworks · Answer

A fun theoretical problem I want to solve is what happens when there s 2 flows 1Gbps each but the switch is hashing them onto the same LAG member

mvdk85 · Answer

From https svanheule net switches rtl93xx I see that the 9302A might work

mvdk85 · Answer

Yeah it

mvdk85 · Answer

it s an imperfect solution

_dhanos_ · Answer

Yeah this is the hope part I mentioned

_dhanos_ · Answer

LACP is not intelligent enough to make it the way you d like all the time

mvdk85 · Answer

In the case of large numbers of flows this should go away but it s only in the limiting case

mvdk85 · Answer

In practice one link is always more utilised than the other and elephant flows are the common case

mvdk85 · Answer

Unless you re a hyperscaler

mvdk85 · Answer

But it s definitely better than 1 link I wonder why I thought it had a better ethernet link

cfsworks · Answer

The RTL8370MB has a 16 way hash to link table so the fun problem to tackle would be to make a daemon that can automatically balance out this table which should solve this problem nicely

cfsworks · Answer

At least for outgoing flows

mvdk85 · Answer

elephant flows in practice make balancing it impossible

mvdk85 · Answer

You can only ever hope to minimise the imbalance

cfsworks · Answer

Well yes that

cfsworks · Answer

It doesn t have to be perfectly 50 50 you just don t want high congestion

cfsworks · Answer

If you want true 50 50 you have to go round robin and either use only protocols that tolerate reordering or do what Brocade does and balance the link latency in hardware

mvdk85 · Answer

Huh well there is a promising way to add capability to it and you only have to use one of the PCIe2 1 lanes

mvdk85 · Answer

PCIe2 1 supports 5Gbps overheads I think about 10 so if you used a chip on the board that did PCIe to gigabit you could connect them internally at 5Gbps overheads

mvdk85 · Answer

I m reading off https github com FanX Tek rk3588 TRM and Datasheet blob master Rockchip RK3588 Datasheet V1 3 20220328 pdf in particular the Combo PIPE PHY Interface

mvdk85 · Answer

From the right compromise perspective I think the Intel i225 v is available in quantity for very cheap so it might make sense to use it instead

cfsworks · Answer

So the idea is 2 5GBASE T from the module to the board

mvdk85 · Answer

No it would be PCIe2 1 from the module to the board and the board hosts the 2 5Gbe controller

cfsworks · Answer

mm in the M 2 or mPCIe slot

mvdk85 · Answer

Or more accurately 4 2 5GBe controllers

mvdk85 · Answer

Potentially

mvdk85 · Answer

I don t know where we are currently extracting the SATA controllers to apparently the pins are multiplexed with those

cfsworks · Answer

Multiplexed or switched

mvdk85 · Answer

Multiplexed It looks like you configure it somehow it doesn t specify but I m guessing there ll be a magic fuse or something

mvdk85 · Answer

We already use this mechanism for exposing USB3 1 for one of the things

mvdk85 · Answer

And mPCIe slot for another node

mvdk85 · Answer

But there are 3 things to configure so it feels like we might not have used one

mvdk85 · Answer

If so we can use one of these as a victim for a 2 5GBe controller

cfsworks · Answer

But if the controller is on the TP2 not the module which Jetson pins are the victims

mvdk85 · Answer

Oh I see

mvdk85 · Answer

Yeah that makes sense so I suppose it would have to be on the module

mvdk85 · Answer

Do we export it as a MII interface for the Jetson right now

cfsworks · Answer

1000BASE T

mvdk85 · Answer

So we d export it as a 2 5GBASE T

mvdk85 · Answer

Not the most pleasant of things but I suppose it would do

cfsworks · Answer

Which I like since it means RK1s for people who only want 1G don t pay the extra for 2 5G

mvdk85 · Answer

Yeah that s true

cfsworks · Answer

The only thing on the TP2 that has to be upgraded is the switch

mvdk85 · Answer

And it s compatible both ways

mvdk85 · Answer

It just autonegotiates the best capability

mvdk85 · Answer

How do we export the second interface right now by the way

mvdk85 · Answer

Is the second just unconnected

cfsworks · Answer

Second interface of which interconnect technology

mvdk85 · Answer

RK1

cfsworks · Answer

I mean fill in the blank second interface PCIe

mvdk85 · Answer

Ethernet

cfsworks · Answer

Didn t know there was a second on the RK3588 but I d guess there s no PHY on it so the pins only go as far as the RK1 PCB

mvdk85 · Answer

I figured that was the probably answer

mvdk85 · Answer

There was one moderately surprising choice that was made Most of the RTL managed switch chips have a MIPS chip that I think would be sufficiently capable of being a BMC Was it just that it was MIPS or was there another problem

mvdk85 · Answer

Like they certainly have more than enough GPIO pins

cfsworks · Answer

The BMC was selected relatively late in the TP2 design process after the Ethernet switch was already chosen I don t know what criteria went into BMC selection though I m surprised that there s a separate Ethernet PHY when there s extension interfaces on the RTL8370MB though

cfsworks · Answer

It might have been motivated in part by UART quantity and availability of a SD MMC interface which the switching SoCs might not have offered

mvdk85 · Answer

That s true generally flash parts are chosen for switch SoC instead

mvdk85 · Answer

Oh my the 8370MB is cheap even in tiny quantities it s just over $10

mvdk85 · Answer

The equivalent RTL9301 part is US$25 in 200+ quantities and $22 for 1200+

mvdk85 · Answer

https www lcsc com product detail Pre ordered Products Realtek Semicon RTL9301 CG C2916932 html

cfsworks · Answer

I m also suspecting a lot of answers to design trade off questions will be it was the first thing we found that solved the problem

cfsworks · Answer

Realtek s demo schematic for the RTL8370MB appears almost verbatim in the finished TP2 including an unused SPI NOR out beyond node4

mvdk85 · Answer

Wait why include an unused part

mvdk85 · Answer

Oh I think I know

mvdk85 · Answer

The default memory map for the processor will map the SPI NOR straight into its address space

mvdk85 · Answer

Anything else would require config

cfsworks · Answer

Because it s in the demo schematic and they didn t delete it

mvdk85 · Answer

Yeah but I would think that the designers would go to some trouble to save the 50c or so per SPI NOR right

cfsworks · Answer

I d think so too Yet it s there

mvdk85 · Answer

You know from a forward compatibility perspective I like the idea of a 2 5GBaseT interface more and more a future designer wanting a 10G or higher part assuming that future hardware were good enough would be able to do just that

cfsworks · Answer

Or 5GBASE T minus overhead if it s not much more expensive

mvdk85 · Answer

Yeah indeed

mvdk85 · Answer

I mentioned the Intel part because it s $2

mvdk85 · Answer

But it is only 2 5GBe

mvdk85 · Answer

Reading the Jetson pinout https developer download nvidia com assets embedded secure jetson Nano docs JetsonNano DataSheet DS09366001v1 1 pdf jGqI wDfBVYHH0DjsXUjgUeOi6 EI3vjW6np56H42foNXAY1H Lm7EHDyJ nv2BRDFz8xW2shHYYy2FvU7cS4xvMWCRAULsgnUhzWyZVEqe4hHikd66OSKm30LmYjR6cTbDV8dM2uVfePpEHSfC2K3yXK9B o8a5OEilUjSwQIJicDRnsNlCcgl 4xyLzQ== we don t support SATA for Jetsons right

cfsworks · Answer

The only SATA is a PCIe adapter on the TP2 no SATA goes through the socket

mvdk85 · Answer

Oh We don t use that bit of the RK s stuff at all

_dhanos_ · Answer

I m trying to catch up and you got me lost here What do you mean by this

mvdk85 · Answer

Oh just that we d use one of the PCIe IFs of the RK3588 for an i225v or similar and replace the exported 1gbase t interface with a 2 5gbase t interface

_dhanos_ · Answer

With TPi2 the thing is all modules are treated more or less the same I guess So this is why there is ASM1061 SATA controller connected to Node 3 and some chip I forgot the model of connected to the Node 4 for USB 3 0

_dhanos_ · Answer

You can put 10GBASE M 2 modules on the back if you wish

_dhanos_ · Answer

And have 10Gb s network between the modules

mvdk85 · Answer

The idea is what substitutions could be made to make it possible in a TPI2 1

_dhanos_ · Answer

But yes the only way to get more than 1Gb s would be to connect something to the PCie

mvdk85 · Answer

So the idea would be to replace the RTL8370MB with RTL9301 or something like that

_dhanos_ · Answer

https www broadcom com products pcie switches bridges pcie switches pex8716

mvdk85 · Answer

and then add an i225v or perhaps a marvell thing to the RK1 1 and then send that over the pins used for 1GBASE T interface

mvdk85 · Answer

Nah nothing here calls for a PCIe switch

_dhanos_ · Answer

This would mean no Mini PCIe SATA USB 3 0 unless you also add a PCIe switch

_dhanos_ · Answer

Well do you need the ethernet overhead instead of direct host to host communication

mvdk85 · Answer

Forgive me I thought there were 4 PCIe interfaces on the RK3588

_dhanos_ · Answer

There are 2 1x and 4x

mvdk85 · Answer

I thought there were 3 PCIe2 1 and 1 PCIe3

cfsworks · Answer

Time to check the datasheet

_dhanos_ · Answer

https cdn discordapp com attachments 1090193720294522900 1137491087670390804 image png

cfsworks · Answer

https cdn discordapp com attachments 1090193720294522900 1137491165332131880 Screenshot 20230805 150328 png

cfsworks · Answer

So 1x2 + 2x1 might allow the i225v upgrade

mvdk85 · Answer

What about the Combo PIPE PHY interface

_dhanos_ · Answer

I m reading about it right now

mvdk85 · Answer

I was guessing that we were using one of these lanes for the M 2 feature

_dhanos_ · Answer

M 2 uses PCIe3 x4

mvdk85 · Answer

Oh so we re using these lanes for the other features then

_dhanos_ · Answer

I guess there may be indeed 2 more PCIe 2 1 that I wasn unaware of

mvdk85 · Answer

Well maybe just 1 of them for each because it doesn t look like they know about bonding these

_dhanos_ · Answer

Just one of the PCIe 2 1 would be in use then unless there s some RK1 design choice I m not yet aware of

mvdk85 · Answer

And so there d be room to use another on the board You d just have to find room on it

_dhanos_ · Answer

loks like there is indeed 1x PCIe 3 0 x4 and 3x PCIe 2 1 x1

mvdk85 · Answer

It has a lot of connectivity for a tiny SoC

_dhanos_ · Answer

The room is going to be a problem as far as I know it was a challenge to fit everything on the module of this size

_dhanos_ · Answer

I would not be surprised if the additional PCie lanes might be exposed on the connector for future use

cfsworks · Answer

What are the i225v s cooling requirements

mvdk85 · Answer

It s got 1 8W TDP I think

mvdk85 · Answer

1 3 sorry

mvdk85 · Answer

i226v is the norm these days

cfsworks · Answer

Might be able to squeeze it on the back of the module somehow and just go bald no heatsink but still that might be hard to fit

mvdk85 · Answer

7x7mm

mvdk85 · Answer

And expected discontinuance in 2032

cfsworks · Answer

Integrated PHY too It goes straight from PCIe to 2 5GBASE T

mvdk85 · Answer

Yep

mvdk85 · Answer

It says NBASE T as the iface supported so yeah direct to PHY

mvdk85 · Answer

I ll just check the BOM of a card that uses it but I m pretty sure there s no external PHY

mvdk85 · Answer

There s also the RTL8125BG which seems to have fewer reported issues

mvdk85 · Answer

Looking at the card it definitely has an integrated PHY but it s harder to tell what the TDP is

mvdk85 · Answer

Yeah it seems most of the bugs in the Intel thing are related to EEE that is the energy saving part of the spec so I d say that the realtek chip is actually the better of the two probably assuming that the TDP is reasonable

mvdk85 · Answer

Oh found it https datasheet lcsc com lcsc 2205121200 Realtek Semicon RTL8125BG CG C3013605 pdf p44 maximum operating supply current That gives a TDP of about 1W probably less under the specific conditions that we re running

blackphoenixx85 · Answer

For a future TPI I would like to have the LED s of the nodes not be on the board or they have to at least have some FRONT IO for the Node LED s so it would be possible to show the Node LEDS externally on a case Instead of having LED s next the board would be more efficient to simple have a 8 pin 4x2 size connector STATUS+GND for each node where you have to connect your own LED s maybe saving on some production costs even

srcshelton · Answer

Blinkenlights https cdn discordapp com attachments 1090193720294522900 1146499562148724757 image png

blackphoenixx85 · Answer

Support for PWM Fan connector instead of the current 2 pin 12v connctor with temp sensor so you can hook a Noctua Fan Controller directly to the motherboard

dirtywretch · Answer

What he said I ordered a Noctua fan for my case while waiting for the board and now trying to figure out how I m going to make that work

teslamax · Answer

Got the whole Thinking Machines thing going

cfsworks · Answer

https github com turing machines BMC Firmware pull 125 may be of interest to you and < blackphoenixx85>

blackphoenixx85 · Answer

< cfsworks> thanks Will look into it Right now I have a noctua FC1 controller so I can control it manually

dirtywretch · Answer

Thanks for that update I don t know where that leaves me since I don t understand the gestalt of that but I ll take it as SOL and that I should look at the FC1 controller Thank you

cfsworks · Answer

If you re comfortable soldering you can order an EMC2301 chip and Molex 4 pin fan connector and get PWM fan control from the BMC with your current TP2 board If you want to go that route I did works well for me

dirtywretch · Answer

I ve never soldered anything before so not excited with that idea In Geerling s Racking video from last year he made it sound like the four pin connector he shows would have pwm control when the board went into production I know they re working on it He was using a Noctua fan

blackphoenixx85 · Answer

I went with Noctua Chromax 140mm Fan with a Noctua FC1 Fan Controller

j.lec · Answer

Can you elaborate more on this setup

dirtywretch · Answer

I ordered the Noctua FC1 I have two Noctua 120x25 fans one of which I m going to return to get a thinner one 25mm > 15mm to put at the top of the case after I order a fan bracket I d like to put a fan over the motherboard but would need standoffs and a larger fan Maybe with the top and bottom fans and the heat sink fans the thermals will be fine

pink6 · Answer

Awesome What expansion card are you using

terarex · Answer

For nodes 1 and 2 install a Mini PCIe card containing either a ASM1061 2 SATA ports or ASM1064 4 SATA ports Stay away from the ASM RAID cards They don t work ASM1061 based mPCIe cards are 2230 ASM1064 based mPCIe cards are 2242 With the latter you ll need to insulate or remove the standoff at the 2230 position to prevent it from shorting solder points on the bottom of the card node 3 has access to 2 SATA ports from an on TPi2 ASM1061 Note you may need to install the AHCI SATA driver package Symptom is Linux doesn t see the SATA drives but lspci shows the presence of the ASMedia controller

pink6 · Answer

Thanks Dan When I get the RKs I want to set this up in a similar way I want the ability to backup RAID my drives too

srcshelton · Answer

I need to finalise the software and push it to GitHub but it s basically the same as using using the GPIO pins to drive a directly connected fan just that the fan s actually connected to the furthest node

phantom79 · Answer

Would love to see the SATA PCI HIGH speed USB 3 etc shareable assignable to any of the 4 slots thru firmware just like we assign the usb2 0 port to any of the slots dunno how feasible this is but right now having the SATA stuck to 1 node is limiting

the_1st_bodybagger · Answer

I d like to see a method to connect from the BMC serial port to those of the nodes I have an OrangePi One sitting on my M iTX case connected to a USB serial cable I can SSH into my OrangePi Debian and use screen to connect to the BMC so it s acting as a serial terminal server It would be nice to see a similar method to connect to the node serial ports while attached to the BMC serial port

scienceman. · Answer

You mean like a built in KVM switch I don t think that s within the hardware capabilities of the current TPi board though I could be wrong Don t think so though

the_1st_bodybagger · Answer

Not quite a KVM a serial switch connects multiple serial ports to ethernet I used to use them to connect to VAX servers Can still purchase a dedicated one but very $$$$ Perle still do them They are also used today for out of band communication to physical network equipment in some datacentres https www perle com products iolan stg terminal server shtml I could theoretically connect the GPIO to all 4 of the other UART ports on the board and as long as that device was functional I could SSH into it and use screen to connect to the other devices debug ports Startech do a 4 port to USB one which I suppose I could connect to another raspberry pi device https www startech com en ie cards adapters icusb2324 Or I could just get 4 uart to USB cables and connect them direct to a raspberry pi It would be nice if that functionality could go into the next revision TPi 3 or whatever

terarex · Answer

I m hoping Turing Machines retains and populates the 4 pin PWM fan header and the EMC2301 at U109 fan controller on the v2 5 board Retaining the existing 2 pin fan header would also be useful Adding default PWM support would eliminate the need to acquire a separate and extra cost variable speed fan controller

_dhanos_ · Answer

TPi2 v2 5 is going to contain a PWM controllable fan

terarex · Answer

Excellent Thanks for the info

dethtungue · Answer

If it hasn t been requested already please put the board s SD card on top of the board It is a real pain to access once the board is installed in a case

phantom79 · Answer

+1 on this particularly if we plan to make firmware install via sd card it s gonna be accessed more frequently unless of course the official case makes it a breeze to access this via back plane along with the m 2 slots

srcshelton · Answer

I used an SD extension cable so that I ve got a tethered SD card socket elsewhere in my case