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

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STM32 Low-Power Timer supports generic 3 cells PWM to encode PWM number,
period and polarity.

Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Gerald Baeza 2018-02-23 14:36:03 +01:00 committed by Thierry Reding
parent 4eb67a2096
commit e7c4b02c26
1 changed files with 3 additions and 0 deletions
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3
Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt
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@ -7,6 +7,8 @@ See ../mfd/stm32-lptimer.txt for details about the parent node.
Required parameters:
- compatible: Must be "st,stm32-pwm-lp".
- #pwm-cells: Should be set to 3. This PWM chip uses the default 3 cells
bindings defined in pwm.txt.
Optional properties:
- pinctrl-names: Set to "default".
@ -18,6 +20,7 @@ Example:
...
pwm {
compatible = "st,stm32-pwm-lp";
#pwm-cells = <3>;
pinctrl-names = "default";
pinctrl-0 = <&lppwm1_pins>;
};