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PCI: Add PCIE_PME_TO_L2_TIMEOUT_US L2 ready timeout value

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Add the PCIE_PME_TO_L2_TIMEOUT_US macro to define the L2 ready timeout
as described in the PCI specifications.

Link: https://lore.kernel.org/r/20230821184815.2167131-2-Frank.Li@nxp.com
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
This commit is contained in:
Frank Li 2023-08-21 14:48:13 -04:00 committed by Lorenzo Pieralisi
parent fc8b24c28b
commit e78bd50b40
1 changed files with 6 additions and 0 deletions
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6
drivers/pci/pci.h
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@ -13,6 +13,12 @@
#define PCIE_LINK_RETRAIN_TIMEOUT_MS 1000
/*
* PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>
* Recommends 1ms to 10ms timeout to check L2 ready.
*/
#define PCIE_PME_TO_L2_TIMEOUT_US 10000
extern const unsigned char pcie_link_speed[];
extern bool pci_early_dump;