PCI: mvebu: Fix reporting Data Link Layer Link Active on emulated bridge

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Add support for reporting PCI_EXP_LNKSTA_DLLLA bit in Link Control register
on emulated bridge via PCIE_STAT_OFF reg. Function mvebu_pcie_link_up()
already parses this register and returns if Data Link is Active or not.

Also correctly indicate DLLLA capability via PCI_EXP_LNKCAP_DLLLARC bit in
Link Control Capability register which is required for reporting DLLLA bit.

Link: https://lore.kernel.org/r/20220104153529.31647-12-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>

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Pali Rohár 2022-01-04 16:35:29 +01:00 • committed by Lorenzo Pieralisi

parent c94ea32c0d

commit c3bd7dc553

1 changed files with 8 additions and 3 deletions

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drivers/pci/controller/pci-mvebu.c

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