Squashed 'dts/upstream/' content from commit aaba2d45dc2a
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diff --git a/Bindings/pwm/pwm-tipwmss.txt b/Bindings/pwm/pwm-tipwmss.txt
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+TI SOC based PWM Subsystem
+
+Required properties:
+- compatible: Must be "ti,<soc>-pwmss".
+ for am33xx - compatible = "ti,am33xx-pwmss";
+ for am4372 - compatible = "ti,am4372-pwmss","ti,am33xx-pwmss";
+ for dra746 - compatible = "ti,dra746-pwmss", "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:
+epwmss0: epwmss@48300000 { /* PWMSS for am33xx */
+ compatible = "ti,am33xx-pwmss";
+ reg = <0x48300000 0x10>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x48300100 0x48300100 0x80 /* ECAP */
+ 0x48300180 0x48300180 0x80 /* EQEP */
+ 0x48300200 0x48300200 0x80>; /* EHRPWM */
+
+ /* child nodes go here */
+};
+
+epwmss0: epwmss@48300000 { /* PWMSS for am4372 */
+ compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"
+ reg = <0x48300000 0x10>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x48300100 0x48300100 0x80 /* ECAP */
+ 0x48300180 0x48300180 0x80 /* EQEP */
+ 0x48300200 0x48300200 0x80>; /* EHRPWM */
+
+ /* child nodes go here */
+};
+
+epwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */
+ compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss";
+ reg = <0x4843e000 0x30>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* child nodes go here */
+};