linux-kernel - [PATCH v4 1/4] dt-bindings: rng: add st,stm32mp25-rng support

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Message-ID: <20241016-rng-mp25-v2-v4-1-5dca590cb092@foss.st.com>
Date: Wed, 16 Oct 2024 10:04:18 +0200
From: Gatien Chevallier <gatien.chevallier@...s.st.com>
To: Olivia Mackall <olivia@...enic.com>,
        Herbert Xu
	<herbert@...dor.apana.org.au>,
        Rob Herring <robh@...nel.org>,
        Krzysztof
 Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime
 Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue
	<alexandre.torgue@...s.st.com>,
        Lionel Debieve <lionel.debieve@...s.st.com>, <marex@...x.de>
CC: <linux-crypto@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Gatien Chevallier <gatien.chevallier@...s.st.com>
Subject: [PATCH v4 1/4] dt-bindings: rng: add st,stm32mp25-rng support

Add RNG STM32MP25x platforms compatible. Update the clock
properties management to support all versions.

Signed-off-by: Gatien Chevallier <gatien.chevallier@...s.st.com>
---
Changes in V4:
	- Changed the restrictions on clock-names per compatible
	- Removed a useless constraint on clocks Items

Changes in V3:
	- Add constraint on clock-names for st,stm32mp25-rng compatible

Changes in V2
	-Fix missing min/maxItems
	-Removed MP25 RNG example
	-Renamed RNG clocks for mp25 to "core" and "bus"
---
 .../devicetree/bindings/rng/st,stm32-rng.yaml      | 28 +++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
index 340d01d481d12ce8664a60db42182ddaf0d1385b..7db65f49773b5b9b1b6193fec495c752327a149a 100644
--- a/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
+++ b/Documentation/devicetree/bindings/rng/st,stm32-rng.yaml
@@ -18,12 +18,19 @@ properties:
     enum:
       - st,stm32-rng
       - st,stm32mp13-rng
+      - st,stm32mp25-rng
 
   reg:
     maxItems: 1
 
   clocks:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: core
+      - const: bus
 
   resets:
     maxItems: 1
@@ -57,6 +64,25 @@ allOf:
       properties:
         st,rng-lock-conf: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - st,stm32-rng
+              - st,stm32mp13-rng
+    then:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names: false
+    else:
+      properties:
+        clocks:
+          minItems: 2
+      required:
+        - clock-names
+
 additionalProperties: false
 
 examples:

-- 
2.25.1