diff options
Diffstat (limited to 'drivers/pci/fsl_pci_init.c')
| -rw-r--r-- | drivers/pci/fsl_pci_init.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/pci/fsl_pci_init.c b/drivers/pci/fsl_pci_init.c index bb2813f..38a16e5 100644 --- a/drivers/pci/fsl_pci_init.c +++ b/drivers/pci/fsl_pci_init.c @@ -168,8 +168,21 @@ fsl_pci_init(struct pci_controller *hose) } #ifndef CONFIG_PCI_NOSCAN - printf (" Scanning PCI bus %02x\n", hose->current_busno); - hose->last_busno = pci_hose_scan_bus(hose,hose->current_busno); + pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &temp8); + + /* Programming Interface (PCI_CLASS_PROG) + * 0 == pci host or pcie root-complex, + * 1 == pci agent or pcie end-point + */ + if (!temp8) { + printf(" Scanning PCI bus %02x\n", + hose->current_busno); + hose->last_busno = pci_hose_scan_bus(hose, hose->current_busno); + } else { + debug(" Not scanning PCI bus %02x. PI=%x\n", + hose->current_busno, temp8); + hose->last_busno = hose->current_busno; + } if ( bridge ) { /* update limit regs and subordinate busno */ pciauto_postscan_setup_bridge(hose, dev, hose->last_busno); |