diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index d10cc6ee1a68..e5ebe56fb0c5 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -310,8 +310,10 @@ static void oxygen_restore_eeprom(struct oxygen *chip,
 
 static void configure_pcie_bridge(struct pci_dev *pci)
 {
-	enum { PI7C9X110 };
+	enum { PEX811X, PI7C9X110 };
 	static const struct pci_device_id bridge_ids[] = {
+		{ PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
+		{ PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
 		{ PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
 		{ }
 	};
@@ -328,6 +330,19 @@ static void configure_pcie_bridge(struct pci_dev *pci)
 		return;
 
 	switch (id->driver_data) {
+	case PEX811X:	/* PLX PEX8111/PEX8112 PCIe/PCI bridge */
+		pci_read_config_dword(bridge, 0x48, &tmp);
+		tmp |= 1;	/* enable blind prefetching */
+		tmp |= 1 << 11;	/* enable beacon generation */
+		pci_write_config_dword(bridge, 0x48, tmp);
+
+		pci_write_config_dword(bridge, 0x84, 0x0c);
+		pci_read_config_dword(bridge, 0x88, &tmp);
+		tmp &= ~(7 << 27);
+		tmp |= 2 << 27;	/* set prefetch size to 128 bytes */
+		pci_write_config_dword(bridge, 0x88, tmp);
+		break;
+
 	case PI7C9X110:	/* Pericom PI7C9X110 PCIe/PCI bridge */
 		pci_read_config_dword(bridge, 0x40, &tmp);
 		tmp |= 1;	/* park the PCI arbiter to the sound chip */