[PATCH 07/10] dt-bindings: rng: add st,rng-lock-conf

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If st,rng-lock-conf is set, the RNG configuration in RNG_CR, RNG_HTCR
and RNG_NSCR will be locked. It is supported starting from the RNG
version present in the STM32MP13

Signed-off-by: Gatien Chevallier <gatien.chevallier@xxxxxxxxxxx>
---
 .../devicetree/bindings/rng/st,stm32-rng.yaml      | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
index 59abdc85a9fb..0055f14a8e3f 100644
--- a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
+++ b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
@@ -37,6 +37,20 @@ required:
   - reg
   - clocks
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - st,stm32mp13-rng
+    then:
+      properties:
+        st,rng-lock-conf:
+          type: boolean
+          description: If set, the RNG configuration in RNG_CR, RNG_HTCR and
+                       RNG_NSCR will be locked.
+
 additionalProperties: false
 
 examples:
-- 
2.25.1




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