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Tuesday, March 24 • 3:25pm - 4:15pm
Last One Out, Turn Off The Lights - Geert Uytterhoeven

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Recently, power management has been moving from system-wide power states to more fine-grained power control, saving more power and providing snappier user experiences (QoS). Modern devices are almost never turned off, even if battery operated. They are lurking in (partial) low-power states, always ready to process external requests.
At the hardware SoC level, this is done by organizing the various SoC components in complex topologies, controlled by power and clock controllers. Inside the Linux kernel, PM domains and the Generic PM Domain provide abstractions for various types of power and clock domains.
In this presentation, Geert will talk about recent advancements in the areas of PM domains and runtime PM. He will explain how to handle SoC power and clock domains in Linux, how to model them in DT, and how to ensure that (existing) drivers play well in a system using PM domains.

Speakers
avatar for Geert Uytterhoeven

Geert Uytterhoeven

Owner, Glider bvba
Geert Uytterhoeven became involved with Linux more than 2 decades ago, when he started hacking the Linux kernel to make it work better on his Amiga. This paved the way for a long string of contributions to Linux. Geert may be most known as maintainer of Linux on the old m68k architecture, and as former maintainer of the Linux frame buffer device subsystem, but he has touched kernel code all over the place. In 2013, Geert founded Glider bvba... Read More →


Tuesday March 24, 2015 3:25pm - 4:15pm
Blossom Hill 1/2