Add documentation for STMicroelectronics STM32 Low-Power Timer Trigger
binding.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
Changes in v3:
- Rob's comments: node name timer@..., update reg property
description
Changes in v2:
- s/Low Power/Low-Power
- remove leading 0x in example (parent node)
- improve reg property description
---
.../bindings/iio/timer/stm32-lptimer-trigger.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt
diff --git a/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt b/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt
new file mode 100644
index 0000000..85e6806
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/timer/stm32-lptimer-trigger.txt
@@ -0,0 +1,23 @@
+STMicroelectronics STM32 Low-Power Timer Trigger
+
+STM32 Low-Power Timer provides trigger source (LPTIM output) that can be used
+by STM32 internal ADC and/or DAC.
+
+Must be a sub-node of an STM32 Low-Power Timer device tree node.
+See ../mfd/stm32-lptimer.txt for details about the parent node.
+
+Required properties:
+- compatible: Must be "st,stm32-lptimer-trigger".
+- reg: Identify trigger hardware block. Must be 0, 1 or 2
+ respectively for lptimer1, lptimer2 or lptimer3
+ trigger output.
+
+Example:
+ timer@40002400 {
+ compatible = "st,stm32-lptimer";
+ ...
+ trigger@0 {
+ compatible = "st,stm32-lptimer-trigger";
+ reg = <0>;
+ };
+ };
--
1.9.1
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