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 am654 - compatible = "ti,am654-ehrpwm", "ti-am3352-ehrpwm";
8 for da850 - compatible = "ti,da850-ehrpwm", "ti-am3352-ehrpwm", "ti,am33xx-ehrpwm";
9 for dra746 - compatible = "ti,dra746-ehrpwm", "ti-am3352-ehrpwm";
10 - #pwm-cells: should be 3. See pwm.yaml in this directory for a description of
11 the cells format. The only third cell flag supported by this binding is
12 PWM_POLARITY_INVERTED.
13 - reg: physical base address and size of the registers map.
14
15 Optional properties:
16 - clocks: Handle to the PWM's time-base and functional clock.
17 - clock-names: Must be set to "tbclk" and "fck".
18
19 Example:
20
21 ehrpwm0: pwm@48300200 { /* EHRPWM on am33xx */
22 compatible = "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
23 #pwm-cells = <3>;
24 reg = <0x48300200 0x100>;
25 clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
26 clock-names = "tbclk", "fck";
27 };
28
29 ehrpwm0: pwm@48300200 { /* EHRPWM on am4372 */
30 compatible = "ti,am4372-ehrpwm", "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
31 #pwm-cells = <3>;
32 reg = <0x48300200 0x80>;
33 clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
34 clock-names = "tbclk", "fck";
35 ti,hwmods = "ehrpwm0";
36 };
37
38 ehrpwm0: pwm@1f00000 { /* EHRPWM on da850 */
39 compatible = "ti,da850-ehrpwm", "ti,am3352-ehrpwm", "ti,am33xx-ehrpwm";
40 #pwm-cells = <3>;
41 reg = <0x1f00000 0x2000>;
42 };
43
44 ehrpwm0: pwm@4843e200 { /* EHRPWM on dra746 */
45 compatible = "ti,dra746-ehrpwm", "ti,am3352-ehrpwm";
46 #pwm-cells = <3>;
47 reg = <0x4843e200 0x80>;
48 clocks = <&ehrpwm0_tbclk>, <&l4_root_clk_div>;
49 clock-names = "tbclk", "fck";
50 };
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