This adds documentation of device tree bindings for the
STM32 reset controller.
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
---
.../devicetree/bindings/reset/st,stm32-reset.txt | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/st,stm32-reset.txt
diff --git a/Documentation/devicetree/bindings/reset/st,stm32-reset.txt b/Documentation/devicetree/bindings/reset/st,stm32-reset.txt
new file mode 100644
index 0000000..5982528
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/st,stm32-reset.txt
@@ -0,0 +1,36 @@
+STMicroelectronics STM32 Peripheral Reset Controller
+====================================================
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required properties:
+- compatible: Should be "st,stm32-reset"
+- reg: should be register base and length as documented in the
+ datasheet
+- #reset-cells: 1, see below
+
+example:
+
+reset_ahb1: reset@40023810 {
+ #reset-cells = <1>;
+ compatible = "st,stm32-reset";
+ reg = <0x40023810 0x4>;
+};
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use, as described in reset.txt
+
+example:
+
+ timer2 {
+ resets = <&resets TIM2_RESET>;
+ };
+
+Macro definitions for the supported reset channels can be found in:
+
+include/dt-bindings/reset/st,stm32f429.h
--
1.9.1
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