Staging Update For Linux 4.9 Is Heavy With Adding Greybus, Raspberry Pi VCHIQ
Written by Michael Larabel in Linux Kernel on 5 October 2016 at 08:39 AM EDT. Add A Comment
LINUX KERNEL --
Greg Kroah-Hartman sent in the staging subsystem pull request for the Linux 4.9 kernel and it's quite big in part due to the addition of the Greybus subsystem.

As covered recently, Greybus is an interesting subsystem that is "an application-level protocol for the UniPro (Unified Protocol) hardware transport. Greybus is central to Google's Project Ara smartphone, which was announced earlier this month as being canned by Google. However, Greybus is supposed to be shipping in a Motorola phone 'any-day-now', according to Greg KH."

Greybus was added to the staging subsystem while the rtl8723au was removed from staging and the Raspberry Pi now has a VC4 VCHIQ driver added. The VCHIQ driver in Linux 4.9 staging is a step towards having a mainline V4L2 camera driver. The VCHIQ is a VideoCore communication interface for BCM2709 products.

Staging also has continued work on Lustre, Unisys, wlan-ng, and the other areas while merging Greybus by far accounts for most of the staging changes this cycle. More details via the pull request.
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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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