Re: [Linuxptp-users] Linuxptp and AES67

2018-12-08 Thread Robin Shamsnejad
Hi everyone, I am currently running some tests to synchronize a Linux computer with an AES67 device and need to work around an issue. The device is a Dante I/O box with AES67 mode enabled. For those who don't know what AES67 is : it is a standard for streaming professional-grade digital aud

Re: [Linuxptp-users] Linuxptp and AES67

2018-12-08 Thread Richard Cochran
On Sat, Dec 08, 2018 at 11:57:44AM +0100, Robin Shamsnejad wrote: > This is not a problem for audio I/O as we don't need absolute time, > only matching clock frequencies. The problem is on the Linux slave > computer : abruptly setting the system clock to 1970 causes a lot of > problems, among them

Re: [Linuxptp-users] Linuxptp and AES67

2018-12-08 Thread Richard Cochran
On Sat, Dec 08, 2018 at 11:57:44AM +0100, Robin Shamsnejad wrote: > This is not a problem for audio I/O as we don't need absolute time, > only matching clock frequencies. You could also change phc2sys to only match frequency and ignore phase. That would probably be easiest for your use case. HTH

Re: [Linuxptp-users] Linuxptp and AES67

2018-12-08 Thread Robin Shamsnejad
Hi Richard, Thanks for the fast answer. I think the second option is the best. But with SW timestamping, can you think of another option to achieve the same result ? (As for your second e-mail, on second thought I was mistaken : we do need absolute time in order to properly timestamp