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	ranges = <0x48300100 0x48300100 0x80   /* ECAP */
30		  0x48300180 0x48300180 0x80   /* EQEP */
31		  0x48300200 0x48300200 0x80>; /* EHRPWM */
32
33	/* child nodes go here */
34};
35
36epwmss0: epwmss@48300000 { /* PWMSS for am4372 */
37	compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"
38	reg = <0x48300000 0x10>;
39	ti,hwmods = "epwmss0";
40	#address-cells = <1>;
41	#size-cells = <1>;
42	ranges = <0x48300100 0x48300100 0x80   /* ECAP */
43		  0x48300180 0x48300180 0x80   /* EQEP */
44		  0x48300200 0x48300200 0x80>; /* EHRPWM */
45
46	/* child nodes go here */
47};
48
49epwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */
50	compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss";
51	reg = <0x4843e000 0x30>;
52	ti,hwmods = "epwmss0";
53	#address-cells = <1>;
54	#size-cells = <1>;
55	ranges;
56
57	/* child nodes go here */
58};
59