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    Subject[PATCH v3 3/7] PWM: add pwm-stm32 DT bindings
    Date
    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 | 38 ++++++++++++++++++++++
    1 file changed, 38 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..575b9fb
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
    @@ -0,0 +1,38 @@
    +STMicroelectronics PWM driver bindings for STM32
    +
    +Must be a sub-node of STM32 general purpose timer driver
    +Parent node properties are describe in ../mfd/stm32-general-purpose-timer.txt
    +
    +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, please refer to [1].
    +
    +Optional parameters:
    +- st,breakinput: Set if the hardware have break input capabilities
    +- st,breakinput-polarity: Set break input polarity. Default is 0
    + The value define the active polarity:
    + - 0 (active LOW)
    + - 1 (active HIGH)
    +- st,pwm-num-chan: Number of available PWM channels. Default is 0.
    +- st,32bits-counter: Set if the hardware have a 32 bits counter
    +- st,complementary: Set if the hardware have complementary output channels
    +
    +[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
    +
    +Example:
    + gptimer1: gptimer1@40010000 {
    + compatible = "st,stm32-gptimer";
    + reg = <0x40010000 0x400>;
    + clocks = <&rcc 0 160>;
    + clock-names = "clk_int";
    +
    + pwm1@0 {
    + compatible = "st,stm32-pwm";
    + st,pwm-num-chan = <4>;
    + st,breakinput;
    + st,complementary;
    + };
    + };
    --
    1.9.1
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