Define bindings for pwm-stm32
version 2: - use parameters instead of compatible of handle the hardware configuration
Signed-off-by: Benjamin Gaignard benjamin.gaignard@st.com --- .../devicetree/bindings/pwm/pwm-stm32.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/pwm-stm32.txt
diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt new file mode 100644 index 0000000..b8ea660 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt @@ -0,0 +1,33 @@ +STMicroelectronics STM32 General Purpose Timer PWM bindings + +Must be a sub-node of an STM32 General Purpose Timer device tree node. +See ../mfd/stm32-general-purpose-timer.txt for details about the parent node. + +Required parameters: +- compatible: Must be "st,stm32-pwm". +- pinctrl-names: Set to "default". +- pinctrl-0: List of phandles pointing to pin configuration nodes for PWM module. + For Pinctrl properties see ../pinctrl/pinctrl-bindings.txt + +Optional parameters: +- st,breakinput-polarity: If present, a break input is available + for the channel. In that case the property value denotes the + polarity of the break input: + - 0: active low + - 1: active high + +Example: + timers@40010000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "st,stm32-gptimer"; + reg = <0x40010000 0x400>; + clocks = <&rcc 0 160>; + clock-names = "clk_int"; + + pwm@0 { + compatible = "st,stm32-pwm"; + pinctrl-0 = <&pwm1_pins>; + pinctrl-names = "default"; + }; + };