1TI QSPI controller.
2
3Required properties:
4- compatible : should be "ti,dra7xxx-qspi" or "ti,am4372-qspi".
5- reg: Should contain QSPI registers location and length.
6- reg-names: Should contain the resource reg names.
7	- qspi_base: Qspi configuration register Address space
8	- qspi_mmap: Memory mapped Address space
9	- (optional) qspi_ctrlmod: Control module Address space
10- interrupts: should contain the qspi interrupt number.
11- #address-cells, #size-cells : Must be present if the device has sub-nodes
12- ti,hwmods: Name of the hwmod associated to the QSPI
13
14Recommended properties:
15- spi-max-frequency: Definition as per
16                     Documentation/devicetree/bindings/spi/spi-bus.txt
17
18Optional properties:
19- syscon-chipselects: Handle to system control region contains QSPI
20		      chipselect register and offset of that register.
21
22NOTE: TI QSPI controller requires different pinmux and IODelay
23parameters for Mode-0 and Mode-3 operations, which needs to be set up by
24the bootloader (U-Boot). Default configuration only supports Mode-0
25operation. Hence, "spi-cpol" and "spi-cpha" DT properties cannot be
26specified in the slave nodes of TI QSPI controller without appropriate
27modification to bootloader.
28
29Example:
30
31For am4372:
32qspi: qspi@47900000 {
33	compatible = "ti,am4372-qspi";
34	reg = <0x47900000 0x100>, <0x30000000 0x4000000>;
35	reg-names = "qspi_base", "qspi_mmap";
36	#address-cells = <1>;
37	#size-cells = <0>;
38	spi-max-frequency = <25000000>;
39	ti,hwmods = "qspi";
40};
41
42For dra7xx:
43qspi: qspi@4b300000 {
44	compatible = "ti,dra7xxx-qspi";
45	reg = <0x4b300000 0x100>,
46	      <0x5c000000 0x4000000>,
47	reg-names = "qspi_base", "qspi_mmap";
48	syscon-chipselects = <&scm_conf 0x558>;
49	#address-cells = <1>;
50	#size-cells = <0>;
51	spi-max-frequency = <48000000>;
52	ti,hwmods = "qspi";
53};
54