PCI: layerscape: Add the endpoint linkup notifier support

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[ Upstream commit 061cbfab09 ]

Layerscape has PME interrupt, which can be used as linkup notifier.  Set
CFG_READY bit of PEX_PF0_CONFIG to enable accesses from root complex when
linkup detected.

Link: https://lore.kernel.org/r/20230515151049.2797105-1-Frank.Li@nxp.com
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Frank Li 2023-05-15 11:10:49 -04:00 • committed by Greg Kroah-Hartman

parent 5dbedec7e5

commit e30f82597b

1 changed files with 99 additions and 1 deletions

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drivers/pci/controller/dwc/pci-layerscape-ep.c

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