1TI SOC based PWM Subsystem
2
3Required properties:
4- compatible: Must be "ti,<soc>-pwmss".
5  for am33xx  - compatible = "ti,am33xx-pwmss";
6  for am4372  - compatible = "ti,am4372-pwmss","ti,am33xx-pwmss";
7  for dra746 - compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss"
8
9- reg: physical base address and size of the registers map.
10- address-cells: Specify the number of u32 entries needed in child nodes.
11		  Should set to 1.
12- size-cells: specify number of u32 entries needed to specify child nodes size
13		in reg property. Should set to 1.
14- ranges: describes the address mapping of a memory-mapped bus. Should set to
15	   physical address map of child's base address, physical address within
16	   parent's address  space and length of the address map. For am33xx,
17	   3 set of child register maps present, ECAP register space, EQEP
18	   register space, EHRPWM register space.
19
20Also child nodes should also populated under PWMSS DT node.
21
22Example:
23epwmss0: epwmss@48300000 { /* PWMSS for am33xx */
24	compatible = "ti,am33xx-pwmss";
25	reg = <0x48300000 0x10>;
26	ti,hwmods = "epwmss0";
27	#address-cells = <1>;
28	#size-cells = <1>;
29	status = "disabled";
30	ranges = <0x48300100 0x48300100 0x80   /* ECAP */
31		  0x48300180 0x48300180 0x80   /* EQEP */
32		  0x48300200 0x48300200 0x80>; /* EHRPWM */
33
34	/* child nodes go here */
35};
36
37epwmss0: epwmss@48300000 { /* PWMSS for am4372 */
38	compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"
39	reg = <0x48300000 0x10>;
40	ti,hwmods = "epwmss0";
41	#address-cells = <1>;
42	#size-cells = <1>;
43	status = "disabled";
44	ranges = <0x48300100 0x48300100 0x80   /* ECAP */
45		  0x48300180 0x48300180 0x80   /* EQEP */
46		  0x48300200 0x48300200 0x80>; /* EHRPWM */
47
48	/* child nodes go here */
49};
50
51epwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */
52	compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss";
53	reg = <0x4843e000 0x30>;
54	ti,hwmods = "epwmss0";
55	#address-cells = <1>;
56	#size-cells = <1>;
57	ranges;
58
59	/* child nodes go here */
60};
61