[ppc4xx] Separate settings for PCIe bus numbering on 440SPe rev.A

This brings back separate settings for PCIe bus numbers depending on chip
revision, which got eliminated in 2b393b0f0af8402ef43b25c1968bfd29714ddffa
commit. 440SPe rev. A does NOT work properly with the same settings as for
the rev. B (no devices are seen on the bus during enumeration).

Signed-off-by: Rafal Jaworowski <raj@semihalf.com>

diff --git a/cpu/ppc4xx/440spe_pcie.c b/cpu/ppc4xx/440spe_pcie.c
index d6c4be5..7b27e87 100644 (file)
--- a/cpu/ppc4xx/440spe_pcie.c
+++ b/cpu/ppc4xx/440spe_pcie.c
@@ -783,9 +783,14 @@ void ppc440spe_setup_pcie_rootpoint(struct pci_controller *hose, int port)
        /*
         * Set bus numbers on our root port
         */
-       out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
-       out_8((u8 *)mbase + PCI_SECONDARY_BUS, 1);
-       out_8((u8 *)mbase + PCI_SUBORDINATE_BUS, 1);
+       if (ppc440spe_revB()) {
+               out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
+               out_8((u8 *)mbase + PCI_SECONDARY_BUS, 1);
+               out_8((u8 *)mbase + PCI_SUBORDINATE_BUS, 1);
+       } else {
+               out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
+               out_8((u8 *)mbase + PCI_SECONDARY_BUS, 0);
+       }
 
        /*
         * Set up outbound translation to hose->mem_space from PLB