* Rockchip AXI PCIe Endpoint Controller DT description

Required properties:
- compatible: Should contain "rockchip,rk3399-pcie-ep"
- reg: Two register ranges as listed in the reg-names property
- reg-names: Must include the following names
	- "apb-base"
	- "mem-base"
- clocks: Must contain an entry for each entry in clock-names.
		See ../clocks/clock-bindings.txt for details.
- clock-names: Must include the following entries:
	- "aclk"
	- "aclk-perf"
	- "hclk"
	- "pm"
- resets: Must contain seven entries for each entry in reset-names.
	   See ../reset/reset.txt for details.
- reset-names: Must include the following names
	- "core"
	- "mgmt"
	- "mgmt-sticky"
	- "pipe"
	- "pm"
	- "aclk"
	- "pclk"
- pinctrl-names : The pin control state names
- pinctrl-0: The "default" pinctrl state
- phys: Must contain an phandle to a PHY for each entry in phy-names.
- phy-names: Must include 4 entries for all 4 lanes even if some of
  them won't be used for your cases. Entries are of the form "pcie-phy-N":
  where N ranges from 0 to 3.
  (see example below and you MUST also refer to ../phy/rockchip-pcie-phy.txt
  for changing the #phy-cells of phy node to support it)
- rockchip,max-outbound-regions: Maximum number of outbound regions

Optional Property:
- num-lanes: number of lanes to use
- max-functions: Maximum number of functions that can be configured (default 1).

pcie0-ep: pcie@f8000000 {
	compatible = "rockchip,rk3399-pcie-ep";
	#address-cells = <3>;
	#size-cells = <2>;
	rockchip,max-outbound-regions = <16>;
	clocks = <&cru ACLK_PCIE>, <&cru ACLK_PERF_PCIE>,
		 <&cru PCLK_PCIE>, <&cru SCLK_PCIE_PM>;
	clock-names = "aclk", "aclk-perf",
		      "hclk", "pm";
	max-functions = /bits/ 8 <8>;
	num-lanes = <4>;
	reg = <0x0 0xfd000000 0x0 0x1000000>, <0x0 0x80000000 0x0 0x20000>;
	reg-names = "apb-base", "mem-base";
	resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
		 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE> ,
		 <&cru SRST_PCIE_PM>, <&cru SRST_P_PCIE>, <&cru SRST_A_PCIE>;
	reset-names = "core", "mgmt", "mgmt-sticky", "pipe",
		      "pm", "pclk", "aclk";
	phys = <&pcie_phy 0>, <&pcie_phy 1>, <&pcie_phy 2>, <&pcie_phy 3>;
	phy-names = "pcie-phy-0", "pcie-phy-1", "pcie-phy-2", "pcie-phy-3";
	pinctrl-names = "default";
	pinctrl-0 = <&pcie_clkreq>;
};