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The state of open source GPU drivers on Arm in 2019

Submitted by Rianne Schestowitz on Wednesday 10th of July 2019 12:00:36 AM Filed under
OSS

I first blogged about the state of open source drivers for Arm GPUs 7 years ago, in January 2012, and then again in September 2017. I’ve had a few requests since then to provide an update but I’ve not bothered because there’s really been no real change in the last few years, that is until now!

So the big positive change is that there’s two new open drivers om the scene with the panfrost and lima drivers. Panfrost is a reverse engineered driver for the newer Midguard and Bitfrost series of Mali GPUs designed/licensed by Arm, whereas Lima is aimed at the older Utguard series Mali 4xx series of devices. Panfrost, started by Alyssa Rosenzweig, and now has quite a large contributor base, has over the last few months has been coming along leaps and bounds and by the time Mesa 19.2 is out I suspect it should be able to run gnome-shell on an initial set of devices. I’m less certain the state of Lima. The drivers landed in the kernel in the 5.2 development cycle, which Linus just released. On the userspace side they landed in the mesa 19.1 development cycle, but they’ve greatly improving in mesa 19.2 cycle. Of course they’re all enabled in Fedora rawhide, although I don’t expect them to be really testable until later in the 19.2 cycle, but it makes it easy for early adopters who know they’re doing to be able to start to play.

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