This adds documenttaion of device tree binds for the STM32 hardware
random number generator.
Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
---
.../devicetree/bindings/hwrng/stm32-rng.txt | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwrng/stm32-rng.txt
diff --git a/Documentation/devicetree/bindings/hwrng/stm32-rng.txt b/Documentation/devicetree/bindings/hwrng/stm32-rng.txt
new file mode 100644
index 000000000000..47f04176f93b
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwrng/stm32-rng.txt
@@ -0,0 +1,21 @@
+STMicroelectronics STM32 HW RNG
+===============================
+
+The STM32 hardware random number generator is a simple fixed purpose IP and
+is fully separated from other crypto functions.
+
+Required properties:
+
+- compatible : Should be "st,stm32-rng"
+- reg : Should be register base and length as documented in the datasheet
+- interrupts : The designated IRQ line for the RNG
+- clocks : The clock needed to enable the RNG
+
+Example:
+
+ rng: rng@50060800 {
+ compatible = "st,stm32-rng";
+ reg = <0x50060800 0x400>;
+ interrupts = <80>;
+ clocks = <&rcc 0 38>;
+ };
--
2.4.3
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