1Altera QUADSPI driver
2
3Required properties:
4- compatible: Should be "altr,quadspi-1.0"
5- reg: Address and length of the register set  for the device. It contains
6  the information of registers in the same order as described by reg-names
7- reg-names: Should contain the reg names
8  "avl_csr": Should contain the register configuration base address
9  "avl_mem": Should contain the data base address
10- #address-cells: Must be <1>.
11- #size-cells: Must be <0>.
12- flash device tree subnode, there must be a node with the following fields:
13	- compatible: Should contain the flash name:
14	  1. EPCS:   epcs16, epcs64, epcs128
15	  2. EPCQ:   epcq16, epcq32, epcq64, epcq128, epcq256, epcq512, epcq1024
16	  3. EPCQ-L: epcql256, epcql512, epcql1024
17	- #address-cells: please refer to /mtd/partition.txt
18	- #size-cells: please refer to /mtd/partition.txt
19	For partitions inside each flash, please refer to /mtd/partition.txt
20
21Example:
22
23	quadspi_controller_0: quadspi@0x180014a0 {
24		compatible = "altr,quadspi-1.0";
25		reg = <0x180014a0 0x00000020>,
26		      <0x14000000 0x04000000>;
27		reg-names = "avl_csr", "avl_mem";
28		#address-cells = <1>;
29		#size-cells = <0>;
30		flash0: epcq512@0 {
31			compatible = "altr,epcq512";
32			#address-cells = <1>;
33			#size-cells = <1>;
34		};
35	};
36