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Subject[PATCH 1/5] dt-bindings: pwm-stm32: add #pwm-cells
Date
STM32 Timers support generic 3 cells PWM bindings to encode PWM number,
period and polarity as defined in pwm.txt.

Fixes: cd9a99c2f8e8 ("dt-bindings: pwm: Add STM32 bindings")

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
Documentation/devicetree/bindings/pwm/pwm-stm32.txt | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
index 3e6d550..a8690bf 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-stm32.txt
@@ -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>;
--
2.7.4
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