NVIDIA Tegra X2 & Xavier Get HDMI Audio With Linux 4.21
Written by Michael Larabel in NVIDIA on 9 December 2018 at 01:58 AM EST. Add A Comment
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While it's not as exciting as if seeing full 3D open-source driver support, with the upcoming Linux 4.21 kernel are some mainline Tegra improvements that does include HDMI audio support for the X2 and Xavier SoCs.

Thierry Reding of NVIDIA sent in the Tegra DRM driver updates this week for the upcoming Linux 4.21 cycle. He commented, "These changes contain a couple of minor fixes for host1x and the Falcon library in Tegra DRM. There are also a couple of missing pieces that finally enable support for host1x, VIC and display on Tegra194. I've also added a patch that enables audio over HDMI using the SOR which has been tested, and works, on both Tegra186 and Tegra194."

The mainline support for the recent NVIDIA SoCs are improving bit by bit. The Tegra186 is the X2 and the Tegra194 is the latest-generation Xavier SoC. So HDMI should be working and even the open-source display support for Xavier come Linux 4.21 when released towards the end of Q1'2019.

NVIDIA does contribute a bit to Nouveau in the realm of Tegra, but for the best experience you really need to be using their proprietary graphics driver, especially with most Tegra users leveraging CUDA and NVIDIA's proprietary compute interfaces to take full advantage of the SoC's capabilities.
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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 10,000 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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