Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt

   1 TI SOC EHRPWM based PWM controller
   2
   3 Required properties:
   4 - compatible: Must be "ti,<soc>-ehrpwm".
   5   for am33xx  - compatible = "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
   6   for am4372  - compatible = "ti,am4372-ehrpwm", "ti-am3352-ehrpwm", "ti,am33xx-ehrpwm";
   7   for da850   - compatible = "ti,da850-ehrpwm", "ti-am3352-ehrpwm", "ti,am33xx-ehrpwm";
   8   for dra746 - compatible = "ti,dra746-ehrpwm", "ti-am3352-ehrpwm";
   9 - #pwm-cells: should be 3. See pwm.txt in this directory for a description of
  10   the cells format. The only third cell flag supported by this binding is
  11   PWM_POLARITY_INVERTED.
  12 - reg: physical base address and size of the registers map.
  13
  14 Optional properties:
  15 - clocks: Handle to the PWM's time-base and functional clock.
  16 - clock-names: Must be set to "tbclk" and "fck".
  17
  18 Example:
  19
  20 ehrpwm0: pwm@48300200 { /* EHRPWM on am33xx */
  21         compatible = "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
  22         #pwm-cells = <3>;
  23         reg = <0x48300200 0x100>;
  24         clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
  25         clock-names = "tbclk", "fck";
  26 };
  27
  28 ehrpwm0: pwm@48300200 { /* EHRPWM on am4372 */
  29         compatible = "ti,am4372-ehrpwm", "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
  30         #pwm-cells = <3>;
  31         reg = <0x48300200 0x80>;
  32         clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
  33         clock-names = "tbclk", "fck";
  34         ti,hwmods = "ehrpwm0";
  35 };
  36
  37 ehrpwm0: pwm@1f00000 { /* EHRPWM on da850 */
  38         compatible = "ti,da850-ehrpwm", "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
  39         #pwm-cells = <3>;
  40         reg = <0x1f00000 0x2000>;
  41 };
  42
  43 ehrpwm0: pwm@4843e200 { /* EHRPWM on dra746 */
  44         compatible = "ti,dra746-ehrpwm", "ti,am3352-ehrpwm";
  45         #pwm-cells = <3>;
  46         reg = <0x4843e200 0x80>;
  47         clocks = <&ehrpwm0_tbclk>, <&l4_root_clk_div>;
  48         clock-names = "tbclk", "fck";
  49 };