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-rw-r--r--arch/powerpc/sysdev/fsl_pci.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index da7a3d7f54c..23acaf4692d 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -143,18 +143,20 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
(u64)rsrc->start, (u64)resource_size(rsrc));
- if (of_device_is_compatible(hose->dn, "fsl,qoriq-pcie-v2.2")) {
- win_idx = 2;
- start_idx = 0;
- end_idx = 3;
- }
-
pci = ioremap(rsrc->start, resource_size(rsrc));
if (!pci) {
dev_err(hose->parent, "Unable to map ATMU registers\n");
return;
}
+ if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
+ if (in_be32(&pci->block_rev1) >= PCIE_IP_REV_2_2) {
+ win_idx = 2;
+ start_idx = 0;
+ end_idx = 3;
+ }
+ }
+
/* Disable all windows (except powar0 since it's ignored) */
for(i = 1; i < 5; i++)
out_be32(&pci->pow[i].powar, 0);