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

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Hello Rob,

On 9/11/23 17:09, Rob Herring wrote:
On Fri, Sep 08, 2023 at 06:51:17PM +0200, Gatien Chevallier wrote:
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

This should be squashed into the prior binding patch.


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.

Define the property at the top-level and then restrict its presence in
a if/then schema.


Can you please point me to an example of such case. I can't find a way
to define at the top-level the property then restrict it to specific
compatibles.

Else I'd change
additionalProperties :false to
unevaluatedProperties: false

so the definition of the property is seen.

Best regards,
Gatien

+
  additionalProperties: false

Did you test this property is allowed? No, because additionalProperties
won't work with properties defined in if/then schemas.

examples:
--
2.25.1




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