[PATCH 3/4] dt-bindings: iio: stm32-lptimer-counter: document pinctrl sleep state

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Add documentation for optional pinctrl sleep state that can be used by
STM32 LPTimer encoder/counter.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
---
 .../devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt         | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt
index a04aa5c..e90bc47 100644
--- a/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt
+++ b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt
@@ -10,8 +10,9 @@ See ../mfd/stm32-lptimer.txt for details about the parent node.
 
 Required properties:
 - compatible:		Must be "st,stm32-lptimer-counter".
-- pinctrl-names: 	Set to "default".
-- pinctrl-0: 		List of phandles pointing to pin configuration nodes,
+- pinctrl-names: 	Set to "default". An additional "sleep" state can be
+			defined to set pins in sleep state.
+- pinctrl-n: 		List of phandles pointing to pin configuration nodes,
 			to set IN1/IN2 pins in mode of operation for Low-Power
 			Timer input on external pin.
 
@@ -21,7 +22,8 @@ Example:
 		...
 		counter {
 			compatible = "st,stm32-lptimer-counter";
-			pinctrl-names = "default";
+			pinctrl-names = "default", "sleep";
 			pinctrl-0 = <&lptim1_in_pins>;
+			pinctrl-1 = <&lptim1_sleep_in_pins>;
 		};
 	};
-- 
1.9.1




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