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dt-bindings: pwm: stm32-lp: Document pin control sleep state 

Add documentation for pin control sleep state on STM32 LPTimer PWM.

Reviewed-by: Rob Herring <robh@kernel.org>
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 2019-04-18 11:37:45 +02:00 committed by Thierry Reding
parent 9e37a53eb0
commit f6c9b59769
1 changed files with 6 additions and 3 deletions
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9
Documentation/devicetree/bindings/pwm/pwm-stm32-lp.txt
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@ -11,8 +11,10 @@ Required parameters:
bindings defined in pwm.txt.
Optional properties:
- pinctrl-names: Set to "default".
- pinctrl-0: Phandle pointing to pin configuration node for PWM.
- pinctrl-names: Set to "default". An additional "sleep" state can be
defined to set pins in sleep state when in low power.
- pinctrl-n: Phandle(s) pointing to pin configuration node for PWM,
respectively for "default" and "sleep" states.
Example:
timer@40002400 {
@ -21,7 +23,8 @@ Example:
pwm {
compatible = "st,stm32-pwm-lp";
#pwm-cells = <3>;
pinctrl-names = "default";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&lppwm1_pins>;
pinctrl-1 = <&lppwm1_sleep_pins>;
};
};