On Thu, Jan 02, 2014 at 06:50:55PM +0100, Jean-Francois Moine wrote: > No, the 'endpoint' <=> 'remote-endpoint' is a point to point relation. > Even if the sources and sinks are not explicitly defined, the way > the stream flows is easy to find: the main source is always in the > 'audio-controller' node But the links in question aren't point to point links and may be bidirectional... > Usually, the devices don't have to know to which other device they are > connected, and, yes, the reverse pointer sink to source is not useful. This may be the case for the systems you've looked at but other designs are quite common. > But the way (link) the audio stream comes from may be important to > know. This is the case for the HDMI CODEC which must tell the HDMI > transmitter from which hardware port(s) ('reg') it may get the audio > stream. That's why, the HDMI encoder has two endpoints in its audio > port, each endpoint being a different CODEC DAI. Obviously if there are multiple DAIs on a device then it needs to be possible to represent them separately but that seems orthogonal to the rest of the discussion (and resolved already)?
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