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    Subject[PATCH v4 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 | 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..c0cc246
    --- /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:
    + gptimer@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";
    + };
    + };
    --
    1.9.1
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