Merge branch 'pci/controller/dwc'

- Add support for x16 in devicetree 'num-lanes' property (Konrad Dybcio)

* pci/controller/dwc:
  PCI: dwc: Support 16-lane operation

Author: bjorn-helgaas

drivers/pci/controller/dwc/pcie-designware.c

@@ -774,6 +774,9 @@ static void dw_pcie_link_set_max_link_width(struct dw_pcie *pci, u32 num_lanes)
 	case 8:
 		plc |= PORT_LINK_MODE_8_LANES;
 		break;
+	case 16:
+		plc |= PORT_LINK_MODE_16_LANES;
+		break;
 	default:
 		dev_err(pci->dev, "num-lanes %u: invalid value\n", num_lanes);
 		return;

drivers/pci/controller/dwc/pcie-designware.h

@@ -90,6 +90,7 @@
 #define PORT_LINK_MODE_2_LANES		PORT_LINK_MODE(0x3)
 #define PORT_LINK_MODE_4_LANES		PORT_LINK_MODE(0x7)
 #define PORT_LINK_MODE_8_LANES		PORT_LINK_MODE(0xf)
+#define PORT_LINK_MODE_16_LANES		PORT_LINK_MODE(0x1f)
 
 #define PCIE_PORT_LANE_SKEW		0x714
 #define PORT_LANE_SKEW_INSERT_MASK	GENMASK(23, 0)