PCI Changes For Linux 5.17 Bring Intel Raptor Lake IDs, Apple PCIe Clock Gating

Written by Michael Larabel in Hardware on 15 January 2022 at 05:20 AM EST. 1 Comment
The PCI subsystem updates for the in-development Linux 5.17 kernel have been submitted to Linus.

The PCI/PCIe subsystem updates for Linux 5.17 aren't particularly exciting but do have a few changes worth pointing out:

- Clock gating is now enabled for the Apple PCIe controller driver for saving power on Apple Silicon hardware.

- i.MX8MM support is added to the Freescale i.MX PCIe controller driver.

- Intel Raptor Lake support has been added to the Intel VMD host bridge driver.

- Microsoft's Hyper-V host bridge driver has added 64-bit ARM (ARM64/AArch64) Hyper-V virtual PCI support.

The full list of PCI changes for Linux 5.17 can be found from 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 20,000 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, LinkedIn, or contacted via MichaelLarabel.com.

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