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PCI: imx6: Reduce resume time by only starting link if it was up before suspend
authorRichard Zhu <hongxing.zhu@nxp.com>
Thu, 14 Jul 2022 07:31:05 +0000 (15:31 +0800)
committerBjorn Helgaas <bhelgaas@google.com>
Mon, 1 Aug 2022 20:33:54 +0000 (15:33 -0500)
commitaf48f8226e94555bd3c5f93a437acf714024c2c3
tree44751aa809501262df47c06e4e2989cbad734267tree | snapshot
parent508919d0a95c04ef04469e60776146a9795c07cfcommit | diff
PCI: imx6: Reduce resume time by only starting link if it was up before suspend

i.MX PCIe doesn't support hotplug. During resume, only start PCIe link
training when the link was up before system suspend to avoid the long
latency in the link training period.

Link: https://lore.kernel.org/r/1657783869-19194-14-git-send-email-hongxing.zhu@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/controller/dwc/pci-imx6.c diff | blob | history
Domain: System / Kernel;