Many PCI Updates Queued For Linux 4.13
Written by Michael Larabel in Hardware on 9 July 2017 at 10:36 AM EDT. 15 Comments
HARDWARE --
Bjorn Helgaas has submitted a big batch of PCI updates for the Linux 4.13 kernel merge window.

New PCI-related hardware support in Linux 4.13 includes support for the i.MX6 regulator, Qualcomm IPQ4019, MediaTek PCIe host controller, Sigma Designs Tango SMP8759 PCIe controller, HiSilicon Kirin SoC PCIe controller, and Faraday clock handling.

There's also Microsoft HyperV vPCI protocol 1.2 support, Tegra MSI 64-bit addressing support, and various other fixes.

Also notable is that the PCI max link speed/width, current link speed/width, and other attributes will now be exposed via sysfs. Thus it will now be easier to read these attributes. They could be read via lspci up to now, but required root/privileged access for reading the PCI bridge attributes and via sysfs makes it easier for parsing by applications/scripts.

More details on the PCI changes for Linux 4.13 via this 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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