Kernel-3.10.0-957.el7_pwm-tipwmss

TI SOC based PWM Subsystem

Required properties:

• compatible: Must be “ti,am33xx-pwmss”;
• reg: physical base address and size of the registers map.
• address-cells: Specify the number of u32 entries needed in child nodes.

      Should set to 1.
  

• size-cells: specify number of u32 entries needed to specify child nodes size

    in reg property. Should set to 1.
  

• ranges: describes the address mapping of a memory-mapped bus. Should set to

   physical address map of child's base address, physical address within
   parent's address  space and length of the address map. For am33xx,
   3 set of child register maps present, ECAP register space, EQEP
   register space, EHRPWM register space.
  

Also child nodes should also populated under PWMSS DT node.

Example:
pwmss0: pwmss@48300000 {
compatible = “ti,am33xx-pwmss”;
reg = <0x48300000 0x10>;
ti,hwmods = “epwmss0”;
#address-cells = <1>;
#size-cells = <1>;
status = “disabled”;
ranges = <0x48300100 0x48300100 0x80 /* ECAP */
0x48300180 0x48300180 0x80 /* EQEP */
0x48300200 0x48300200 0x80>; /* EHRPWM */

/* child nodes go here */

};