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[karo-tx-linux.git] / Documentation / devicetree / bindings / pwm / vt8500-pwm.txt
1 VIA/Wondermedia VT8500/WM8xxx series SoC PWM controller
2
3 Required properties:
4 - compatible: should be "via,vt8500-pwm"
5 - reg: physical base address and length of the controller's registers
6 - #pwm-cells: Should be 3. Number of cells being used to specify PWM property.
7   First cell specifies the per-chip index of the PWM to use, the second
8   cell is the period in nanoseconds and bit 0 in the third cell is used to
9   encode the polarity of PWM output. Set bit 0 of the third in PWM specifier
10   to 1 for inverse polarity & set to 0 for normal polarity.
11 - clocks: phandle to the PWM source clock
12
13 Example:
14
15 pwm1: pwm@d8220000 {
16         #pwm-cells = <3>;
17         compatible = "via,vt8500-pwm";
18         reg = <0xd8220000 0x1000>;
19         clocks = <&clkpwm>;
20 };