Intel Sends Out Initial Open-Source Linux Graphics Driver Support For Tiger Lake
Written by Michael Larabel in Intel on 28 June 2019 at 10:03 AM EDT. 10 Comments
INTEL --
Intel's tradition of delivering punctual open-source graphics driver support for their hardware continues. While Icelake hardware isn't even hitting the masses yet, Intel developers this week began sending out their initial driver patches for bringing up the graphics on Tiger Lake.

In recent weeks we have seen Intel Linux developers beginning to volley their initial Tiger Lake enablement code across different kernel subsystems and compiler support. This week though are the bits that excite us the most: the Intel graphics support.

The basic enablement was sent out for Tiger Lake, their second-generation 10nm processor to ultimately succeed Icelake potentially as early as 2020 with a Willow Cove GPU, Xe GPU, and updated display technology. While Tiger Lake is said to have their initial "Xe GPU", so far the Tiger Lake Linux driver bits are relatively minor on top of their existing i915 DRM driver with just dozens of patches measuring in just around one thousand lines of code altered. Additionally, one of their patches explicitly states, "Tiger Lake is a IntelĀ® Processor containing IntelĀ® HD Graphics." They do say there is "more to come soon", so we'll see just how different it ends up being from the promising Icelake "Gen 11" graphics.

The code published so far does indicate a fourth additional pipe and transcoder, clock and power management changes, a new "DC3CO" power well, and two additional USB Type-C ports (six USB Type-C ports and three combo PHY ports in total) for DP Alternate Mode / DP Thunderbolt / Native DP / native HDMI/DP. The code does reference the Tiger Lake graphics as being Gen 12 with the generational features being the additional pipe and transcoder and a modular FIA for SoCs. There are seven PCI IDs added at this point under Tiger Lake, though not indicative necessarily for the number of SKUs we'll see since often times there are reserved IDs, some IDs just for pre-production/engineering models, etc.

This initial Tiger Lake code misses the cut-off for making it into Linux 5.3 while we'll likely see this inaugural Tiger Lake Gen 12 graphics support merged for Linux 5.4 later in the year and continue to be refined over the succeeding kernel releases.
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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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