Unverified Commit 164f66be authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Krzysztof Wilczyński
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PCI: Add T_PVPERL macro 

According to the PCIe CEM r5.0, sec 2.9.2, Power stable to PERST#
inactive interval is 100 ms as minimum. Add a macro so that the PCIe
controller drivers can make use of it.

Link: https://lore.kernel.org/linux-pci/20231018085631.1121289-2-yoshihiro.shimoda.uh@renesas.com


Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: default avatarKrzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: default avatarSerge Semin <fancer.lancer@gmail.com>
parent 0bb80ecc

drivers/pci/pci.h

+3 −0
Original line number Diff line number Diff line
@@ -13,6 +13,9 @@ 


#define PCIE_LINK_RETRAIN_TIMEOUT_MS	1000



/* Power stable to PERST# inactive from PCIe card Electromechanical Spec */

#define PCIE_T_PVPERL_MS		100



/*

 * PCIe r6.0, sec 5.3.3.2.1 <PME Synchronization>

 * Recommends 1ms to 10ms timeout to check L2 ready.