--- /dev/null
+--- a/arch/mips/ath79/pci.c
++++ b/arch/mips/ath79/pci.c
+@@ -324,7 +324,8 @@ int __init ath79_register_pci(void)
+ QCA953X_PCI_MEM_SIZE,
+ 0,
+ ATH79_IP2_IRQ(0));
+- } else if (soc_is_qca9558()) {
++ } else if (soc_is_qca9558() ||
++ soc_is_qca9556()) {
+ pdev = ath79_register_pci_ar724x(0,
+ QCA955X_PCI_CFG_BASE0,
+ QCA955X_PCI_CTRL_BASE0,