| Tony Prisk | 63e1ed2 | 2012-10-27 14:49:57 +1300 | [diff] [blame] | 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 |
| Tony Prisk | 3ccb1c1 | 2013-01-03 08:44:16 +1300 | [diff] [blame] | 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. |
| Tony Prisk | 63e1ed2 | 2012-10-27 14:49:57 +1300 | [diff] [blame] | 11 | - clocks: phandle to the PWM source clock |
| 12 | |
| 13 | Example: |
| 14 | |
| 15 | pwm1: pwm@d8220000 { |
| Tony Prisk | 3ccb1c1 | 2013-01-03 08:44:16 +1300 | [diff] [blame] | 16 | #pwm-cells = <3>; |
| Tony Prisk | 63e1ed2 | 2012-10-27 14:49:57 +1300 | [diff] [blame] | 17 | compatible = "via,vt8500-pwm"; |
| 18 | reg = <0xd8220000 0x1000>; |
| 19 | clocks = <&clkpwm>; |
| 20 | }; |