--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -312,6 +312,11 @@ config PCIE_HISI_ERR
 	  Say Y here if you want error handling support
 	  for the PCIe controller's errors on HiSilicon HIP SoCs
 
+config PCIE_OXNAS
+	bool "PLX Oxnas PCIe controller"
+	depends on ARCH_OXNAS
+	select PCIEPORTBUS
+
 source "drivers/pci/controller/dwc/Kconfig"
 source "drivers/pci/controller/mobiveil/Kconfig"
 source "drivers/pci/controller/cadence/Kconfig"
--- a/drivers/pci/controller/Makefile
+++ b/drivers/pci/controller/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_PCIE_ROCKCHIP_HOST) += pcie
 obj-$(CONFIG_PCIE_MEDIATEK) += pcie-mediatek.o
 obj-$(CONFIG_PCIE_MEDIATEK_GEN3) += pcie-mediatek-gen3.o
 obj-$(CONFIG_PCIE_MICROCHIP_HOST) += pcie-microchip-host.o
+obj-$(CONFIG_PCIE_OXNAS) += pcie-oxnas.o
 obj-$(CONFIG_VMD) += vmd.o
 obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
 obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
--- a/arch/arm/boot/dts/ox820.dtsi
+++ b/arch/arm/boot/dts/ox820.dtsi
@@ -289,7 +289,7 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			compatible = "simple-bus";
-			ranges = <0 0x47000000 0x1000000>;
+			ranges = <0 0x47000000 0x2000>;
 
 			scu: scu@0 {
 				compatible = "arm,arm11mp-scu";
@@ -318,5 +318,86 @@
 				      <0x100 0x500>;
 			};
 		};
+
+		pcie0: pcie@47c00000 {
+			compatible = "plxtech,nas782x-pcie";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			/*		flag & space	bus address	host address	size */
+			ranges = <	0x82000000	0 0x48000000	0x48000000	0 0x2000000
+					0xC2000000	0 0x4A000000	0x4A000000	0 0x1E00000
+					0x81000000	0 0x4BE00000	0x4BE00000	0 0x0100000
+					0x80000000	0 0x4BF00000	0x4BF00000	0 0x0100000>;
+
+			bus-range = <0x00 0x7f>;
+
+			/*	cfg			inbound translator	*/
+			reg =	<0x47c00000 0x1000>,	<0x47d00000 0x100>;
+
+			phys = <&pcie_phy>;
+			phy-names = "pcie-phy";
+
+			#interrupt-cells = <1>;
+			/* wild card mask, match all bus address & interrupt specifier */
+			/* format: bus address mask, interrupt specifier mask */
+			/* each bit 1 means need match, 0 means ignored when match */
+			interrupt-map-mask = <0 0 0 0>;
+			/* format: a list of: bus address, interrupt specifier,
+			 * parent interrupt controller & specifier */
+			interrupt-map = <0 0 0 0 &gic 0 19 0x304>;
+			gpios = <&gpio1 12 0>;
+			clocks = <&stdclk CLK_820_PCIEA>, <&pllb>;
+			clock-names = "pcie", "busclk";
+			resets = <&reset RESET_PCIEA>;
+			reset-names = "pcie";
+
+			plxtech,pcie-hcsl-bit = <2>;
+			plxtech,pcie-ctrl-offset = <0x120>;
+			plxtech,pcie-outbound-offset = <0x138>;
+			status = "disabled";
+		};
+
+		pcie1: pcie@47e00000 {
+			compatible = "plxtech,nas782x-pcie";
+			device_type = "pci";
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			/*		flag & space	bus address	host address	size */
+			ranges = <	0x82000000	0 0x4C000000	0x4C000000	0 0x2000000
+					0xC2000000	0 0x4E000000	0x4E000000	0 0x1E00000
+					0x81000000	0 0x4FE00000	0x4FE00000	0 0x0100000
+					0x80000000	0 0x4FF00000	0x4FF00000	0 0x0100000>;
+
+			bus-range = <0x80 0xff>;
+
+			/*	cfg			inbound translator	*/
+			reg =	<0x47e00000 0x1000>,	<0x47f00000 0x100>;
+
+			phys = <&pcie_phy>;
+			phy-names = "pcie-phy";
+
+			#interrupt-cells = <1>;
+			/* wild card mask, match all bus address & interrupt specifier */
+			/* format: bus address mask, interrupt specifier mask */
+			/* each bit 1 means need match, 0 means ignored when match */
+			interrupt-map-mask = <0 0 0 0>;
+			/* format: a list of: bus address, interrupt specifier,
+			 * parent interrupt controller & specifier */
+			interrupt-map = <0 0 0 0 &gic 0 20 0x304>;
+
+			/* gpios = <&gpio1 12 0>; */
+			clocks = <&stdclk CLK_820_PCIEB>, <&pllb>;
+			clock-names = "pcie", "busclk";
+			resets = <&reset RESET_PCIEB>;
+			reset-names = "pcie";
+
+			plxtech,pcie-hcsl-bit = <3>;
+			plxtech,pcie-ctrl-offset = <0x124>;
+			plxtech,pcie-outbound-offset = <0x174>;
+			status = "disabled";
+		};
 	};
 };