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Tuesday, May 20 • 12:00pm - 12:50pm
ACPI vs. Device Tree - Grant Likely, Linaro

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To boot, the kernel needs to understand the hardware. While that information can be hard-coded into the kernel, it is more portable if the system can describe itself to the kernel. Over the years, several ways have been devised for doing so. In the PC world, that method is ACPI, while the embedded Linux world has settled on Flattened Device Tree, and there has been little crossover between the two. Recently however, the ACPI specification has gained support for the ARM architecture which means ARM system builders have a choice between two different solutions.

In this presentation, Grant Likely will talk about the current state of both Flattened Device Tree and ACPI support in the Linux kernel. We will cover the both the similarities and the differences, and why two different solutions exist. More importantly, we'll discuss how to choose between them.


Grant Likely

Fellow, Linaro, Ltd.
Grant Likely is a Linux kernel engineer and a Fellow at Linaro. He is perhaps best know for his work maintaining the Device Tree subsystem used by many embedded Linux systems, and for his current role as chair of the Linux Foundation Technical Advisory Board. At Linaro, Grant works in the Office of the CTO to help define system architecture. Occasionally he picks up a soldering iron and pretends to be a hardware engineer.

Tuesday May 20, 2014 12:00pm - 12:50pm

Attendees (9)