AM5728: PRU HSR/PRP Linux driver PTP synchronization

Pavel Azizov42

Part Number: AM5728

Hello

We've tried to run HSR/PRP driver (based on PRU firmware) in Linux on AM5728 Industrial IDK rev 1.3A.
It works, but when we try to use PTP time synchronization: "ptp4l -i prp0 -m"
we are getting output "interface 'prp0' does not support requested timestamping mode."

Looking through Linux driver /drivers/net/ethernet/ti/prueth.c we have found references to files
/ti-pruss/am57xx-pru0-pruhsrptp-fw.elf and /ti-pruss/am57xx-pru0-pruprpptp-fw.elf
which we could not find in SDK and here http://git.ti.com/processor-firmware/ti-linux-firmware/

Do you have any ideas how to run PTP sync in Linux with HSR/PRP driver?

over 8 years ago

0 Biser Gatchev-XID over 8 years ago

TI__Guru**** 393215 points

The software team have been notified. They will respond here.

0 Vladimir Aparin over 8 years ago in reply to Biser Gatchev-XID

Expert 2610 points

Hello Biser,

What with this question? There are no answer for almost 2 weeks.
It's interesting for me too.

0 Jason Reeder over 8 years ago in reply to Vladimir Aparin

TI__Genius 10440 points

Pavel and Vladimir,

The firmwares can be found here:arago-project.org/.../ and are pulled into the SDK filesystem using BitBake recipes.

My current understanding is that the PRU HSR/PRP implementation doesn't support PTP but it is scheduled to be added in a future SDK release that we are tracking for 1Q18. I have asked colleagues for clarification and will update this thread if I misunderstood.

Jason Reeder

Processors

Processors forum

AM5728: PRU HSR/PRP Linux driver PTP synchronization