1af0ba001SPhilip, AvinashTI SOC based PWM Subsystem 2af0ba001SPhilip, Avinash 3af0ba001SPhilip, AvinashRequired properties: 496d5a545SFranklin S Cooper Jr- compatible: Must be "ti,<soc>-pwmss". 596d5a545SFranklin S Cooper Jr for am33xx - compatible = "ti,am33xx-pwmss"; 696d5a545SFranklin S Cooper Jr for am4372 - compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"; 734370142SVignesh R for dra746 - compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss" 896d5a545SFranklin S Cooper Jr 9af0ba001SPhilip, Avinash- reg: physical base address and size of the registers map. 10af0ba001SPhilip, Avinash- address-cells: Specify the number of u32 entries needed in child nodes. 11af0ba001SPhilip, Avinash Should set to 1. 12af0ba001SPhilip, Avinash- size-cells: specify number of u32 entries needed to specify child nodes size 13af0ba001SPhilip, Avinash in reg property. Should set to 1. 14af0ba001SPhilip, Avinash- ranges: describes the address mapping of a memory-mapped bus. Should set to 15af0ba001SPhilip, Avinash physical address map of child's base address, physical address within 16af0ba001SPhilip, Avinash parent's address space and length of the address map. For am33xx, 17af0ba001SPhilip, Avinash 3 set of child register maps present, ECAP register space, EQEP 18af0ba001SPhilip, Avinash register space, EHRPWM register space. 19af0ba001SPhilip, Avinash 20af0ba001SPhilip, AvinashAlso child nodes should also populated under PWMSS DT node. 21af0ba001SPhilip, Avinash 22af0ba001SPhilip, AvinashExample: 2396d5a545SFranklin S Cooper Jrepwmss0: epwmss@48300000 { /* PWMSS for am33xx */ 24af0ba001SPhilip, Avinash compatible = "ti,am33xx-pwmss"; 25af0ba001SPhilip, Avinash reg = <0x48300000 0x10>; 26af0ba001SPhilip, Avinash ti,hwmods = "epwmss0"; 27af0ba001SPhilip, Avinash #address-cells = <1>; 28af0ba001SPhilip, Avinash #size-cells = <1>; 29af0ba001SPhilip, Avinash ranges = <0x48300100 0x48300100 0x80 /* ECAP */ 30af0ba001SPhilip, Avinash 0x48300180 0x48300180 0x80 /* EQEP */ 31af0ba001SPhilip, Avinash 0x48300200 0x48300200 0x80>; /* EHRPWM */ 32af0ba001SPhilip, Avinash 33af0ba001SPhilip, Avinash /* child nodes go here */ 34af0ba001SPhilip, Avinash}; 3596d5a545SFranklin S Cooper Jr 3696d5a545SFranklin S Cooper Jrepwmss0: epwmss@48300000 { /* PWMSS for am4372 */ 3796d5a545SFranklin S Cooper Jr compatible = "ti,am4372-pwmss","ti,am33xx-pwmss" 3896d5a545SFranklin S Cooper Jr reg = <0x48300000 0x10>; 3996d5a545SFranklin S Cooper Jr ti,hwmods = "epwmss0"; 4096d5a545SFranklin S Cooper Jr #address-cells = <1>; 4196d5a545SFranklin S Cooper Jr #size-cells = <1>; 4296d5a545SFranklin S Cooper Jr ranges = <0x48300100 0x48300100 0x80 /* ECAP */ 4396d5a545SFranklin S Cooper Jr 0x48300180 0x48300180 0x80 /* EQEP */ 4496d5a545SFranklin S Cooper Jr 0x48300200 0x48300200 0x80>; /* EHRPWM */ 4596d5a545SFranklin S Cooper Jr 4696d5a545SFranklin S Cooper Jr /* child nodes go here */ 4796d5a545SFranklin S Cooper Jr}; 4834370142SVignesh R 4934370142SVignesh Repwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */ 5034370142SVignesh R compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss"; 5134370142SVignesh R reg = <0x4843e000 0x30>; 5234370142SVignesh R ti,hwmods = "epwmss0"; 5334370142SVignesh R #address-cells = <1>; 5434370142SVignesh R #size-cells = <1>; 5534370142SVignesh R ranges; 5634370142SVignesh R 5734370142SVignesh R /* child nodes go here */ 5834370142SVignesh R}; 59