GPU Frequency Handling Within The Intel DRM Driver
Written by Michael Larabel in Intel on 24 January 2016 at 07:15 AM EST. 11 Comments
Intel Open-Source Technology Center developer Ben Widawsky has written a blog post about frequency handling within the i915 DRM driver.

Ben explained the dynamically changing frequency handling within the Intel DRM driver, which for modern hardware is requesting a frequency from the firmware, which may or may not honor that request. This firmware-based frequency handling has been in place since the Gen6 days and Ben's post goes on to cover all of the complexities of the frequency handling for this open-source driver.

If you are interested in some technical reading this Sunday and open-source graphics drivers get you excited, go see Ben's blog post. This weekend he also wrote post four of his PPGTT series.
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Michael Larabel is the principal author of 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 automated benchmarking software. He can be followed via Twitter or contacted via

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