USB Audio Class 3.0 Improvements Coming To Linux 4.18
Written by Michael Larabel in Hardware on 21 May 2018 at 10:51 AM EDT. 8 Comments
HARDWARE --
With the recently minted Linux 4.17 kernel there was initial USB Audio Class 3.0 support for this audio-over-USB specification while with Linux 4.18 that UA3 support will be further enhanced.

UAC3 is primarily geared for "USB audio over USB Type-C" that is an upgrade over UAC2 with improved power management, new descriptors, and more.

One of the primary additions for the UAC3 support in Linux 4.18 is supporting BADD, the Basic Audio Device Definition. BADD provides a set of USB device configurations that are considered mandatory for UAC3 devices. Details on UAC3 BADD are outlined by this commit.

There are also other USB audio improvements currently queued in the sound's "next" branch for landing next month in the Linux 4.18 development cycle.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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