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dt-bindings: pwm: stm32: Add #pwm-cells

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STM32 Timers support generic 3 cells PWM bindings to encode PWM number,
period and polarity as defined in pwm.txt.

Fixes: cd9a99c2f8 ("dt-bindings: pwm: Add STM32 bindings")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Fabrice Gasnier 2019-06-19 11:52:01 +02:00 committed by Thierry Reding
parent b2c200e3f2
commit 69252ec165
1 changed files with 3 additions and 0 deletions
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Documentation/devicetree/bindings/pwm/pwm-stm32.txt
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@ -8,6 +8,8 @@ Required parameters:
- 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
- #pwm-cells: Should be set to 3. This PWM chip uses the default 3 cells
bindings defined in pwm.txt.
Optional parameters:
- st,breakinput: One or two <index level filter> to describe break input configurations.
@ -28,6 +30,7 @@ Example:
pwm {
compatible = "st,stm32-pwm";
#pwm-cells = <3>;
pinctrl-0 = <&pwm1_pins>;
pinctrl-names = "default";
st,breakinput = <0 1 5>;