PCI: Add support for polling DLLLA to pcie_retrain_link()

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Let the caller of pcie_retrain_link() specify whether they want to use the
LT bit or the DLLLA bit of the Link Status Register to determine if link
training has completed.  It is up to the caller to verify whether the use
of the DLLLA bit, the implementation of which is optional, is valid for the
device requested.

Link: https://lore.kernel.org/r/alpine.DEB.2.21.2306110310540.64925@angie.orcam.me.uk
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Maciej W. Rozycki 2023-06-11 18:19:53 +01:00 • committed by Bjorn Helgaas

parent 37edd87eb6

commit 680e9c47a2

3 changed files with 22 additions and 10 deletions

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28

drivers/pci/pci.c

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2

drivers/pci/pci.h

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2

drivers/pci/pcie/aspm.c

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