On 16/03/2021 15:52, Frantisek Rysanek wrote:
> On 16 Mar 2021 at 11:25, Miroslav Lichvar wrote:
>>
>> In the Intel's igc driver I saw few SYNCE registers defined,
>> but no code using them.
>>
> Whoa. igc ? oh there's an i225... didn't know about this one, thanks
> for the pointer, this definitely looks promising :-)
> Looks like a successor to the i210 generation.
>
> If I read the gossip correctly, the first generation of i225 are in
> circulation on some gaming motherboards from the first half of 2020,
> and have a hardware bug, something to do with the inter-packet gap.
Yes, like:
https://rog.asus.com/us/motherboards/rog-strix/rog-strix-b550-a-gaming-model/spec
https://www.asus.com/Motherboards-Components/Motherboards/PRIME/PRIME-Z490-A/techspec/
https://rog.asus.com/motherboards/rog-strix/rog-strix-z490-g-gaming-model/spec
Looks like both Intel and AMD use them with gaming chipsets.
I guess other motherboard vendors and other chipsets for gaming do too.
Though other motherboard vendors do not specifying the LAN chip on thier
site.
The inter packet gap remind me of the same issue we measure on Intel i210.
Thanks for telling us know about this issue :-)
>
> https://www.techpowerup.com/266335/intel-i225-foxville-2-5gbe-phy-has-a-flaw-affecting-performance-rocket-lake-s-2h-2020-production-confirmed
>
> A version 2 of the silicon, supposedly produced since Q4/2020, has
> this bug fixed. There's no public datasheet, just a data brief and a
> spec update (a list of SKU's + the erratum for v1 inter-packet gap
> bug.)
>
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.intel.com%2Fcontent%2Fwww%2Fus%2Fen%2Fdesign%2Fproducts-and-solutions%2F&data=04%7C01%7Cerez.geva.ext%40siemens.com%7Ce50c9c225c1f4ec3b96108d8e88d9381%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637515042052738109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Y7lJWL8HEyW31pF%2BAF5wyFuzMGMfSzF84E969t0kSlU%3D&reserved=0
> networking-and-io/ethernet-controller-i225/technical-library.html
>
> And, I can actually see a stand-alone PCI-e board mentioned at
> ark.intel.com - the i225-T1 :
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fark.intel.com%2Fcontent%2Fwww%2Fus%2Fen%2Fark%2Fproducts%2F211808%2Fintel-ethe&data=04%7C01%7Cerez.geva.ext%40siemens.com%7Ce50c9c225c1f4ec3b96108d8e88d9381%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637515042052738109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=tV8bxprqrTAkpRVJGWhH75XfMBmNYPNR%2BNxrjy49H8E%3D&reserved=0
> rnet-network-adapter-i225-t1.html
>
> I cannot see this in the price lists at disties yet, will keep an eye
> on that one :-) The board may surface sooner from HP, Lenovo or
> Dell... There are no photoes yet - I'm curious if it has an SDP pin
> header, similar to the i210-T1.
>
> And this one looks cool too:
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.commell.com.tw%2FProduct%2FPeripheral%2FPCI%2520Express%2520mini%2520ca&data=04%7C01%7Cerez.geva.ext%40siemens.com%7Ce50c9c225c1f4ec3b96108d8e88d9381%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C637515042052738109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2BEhxwy%2F%2B5QTl5mTj2wjsE9swiQh65rW%2BgIfbdAlYufU%3D&reserved=0
> rd/MPX-225.HTM
>
> Frank
>
We found this one "QXG-2G1T-I225, Single-port 2.5 GbE network expansion
card with Intel Ethernet Controller I225-LM"
https://shop.qnap.com/index.php?route=product/product&product_id=387
Hope it uses a newer hardware version that do not have the inter packet
gap issue.
I guess there are probably more i225 expansion cards available on market.
Erez
>
>
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