b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | STMicroelectronics STM32 Timers PWM bindings |
| 2 | |
| 3 | Must be a sub-node of an STM32 Timers device tree node. |
| 4 | See ../mfd/stm32-timers.txt for details about the parent node. |
| 5 | |
| 6 | Required parameters: |
| 7 | - compatible: Must be "st,stm32-pwm". |
| 8 | - pinctrl-names: Set to "default". |
| 9 | - pinctrl-0: List of phandles pointing to pin configuration nodes for PWM module. |
| 10 | For Pinctrl properties see ../pinctrl/pinctrl-bindings.txt |
| 11 | - #pwm-cells: Should be set to 3. This PWM chip uses the default 3 cells |
| 12 | bindings defined in pwm.txt. |
| 13 | |
| 14 | Optional parameters: |
| 15 | - st,breakinput: One or two <index level filter> to describe break input configurations. |
| 16 | "index" indicates on which break input (0 or 1) the configuration |
| 17 | should be applied. |
| 18 | "level" gives the active level (0=low or 1=high) of the input signal |
| 19 | for this configuration. |
| 20 | "filter" gives the filtering value to be applied. |
| 21 | |
| 22 | Example: |
| 23 | timers@40010000 { |
| 24 | #address-cells = <1>; |
| 25 | #size-cells = <0>; |
| 26 | compatible = "st,stm32-timers"; |
| 27 | reg = <0x40010000 0x400>; |
| 28 | clocks = <&rcc 0 160>; |
| 29 | clock-names = "int"; |
| 30 | |
| 31 | pwm { |
| 32 | compatible = "st,stm32-pwm"; |
| 33 | #pwm-cells = <3>; |
| 34 | pinctrl-0 = <&pwm1_pins>; |
| 35 | pinctrl-names = "default"; |
| 36 | st,breakinput = <0 1 5>; |
| 37 | }; |
| 38 | }; |