On Tue, 13 Oct 2015, Richard Cochran wrote: > On Tue, Oct 13, 2015 at 09:15:51PM +0200, Thomas Gleixner wrote: > > That's not working. The firmware is not going to change, no matter > > what. > > Can we at least have a explanation of how the firmware operates? How > are (ART,sys) pairs are generated, and how they are supposed to get > into the DSP?
The firmware gives you an ART/audio timestamp pair. The firmware does neither know about system time nor about PTP time. So we have to do correlation in software. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html