diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index d5e9010a135a..67ec4cf2fdb4 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -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.