Linux 3.9 Brings Zero-Power Optical Device Driver
Written by Michael Larabel in Linux Kernel on 23 February 2013 at 07:32 AM EST. 5 Comments
With the ATA pull for the Linux 3.9 kernel finally comes ZPODD, the Zero-Power Optical Device Driver.

I first wrote about ZPODD support on Linux last May in Better Power Savings With ZPODD On Linux. The Zero-Power Optical Disk Drive is a feature of the Serial ATA 3.1 specification that allows for idle SATA optical disk drives to zero out their energy use if it's not being utilized, thus better energy efficiency on Linux.

It's taken a while, but with the Linux 3.9 kernel the Zero-Power Optical Device Driver is finally being mainlined. The libata pull for Linux 3.9 also adds in a Serial ATA driver for the R-Car SoC and some other random changes. The pull request can be found on the Linux kernel mailing list.

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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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