linux-kernel - [PATCH] dt-bindings: rng: sparc_sun_oracle

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Message-ID: <20250923103900.136621-1-dev@kael-k.io>
Date: Tue, 23 Sep 2025 12:38:22 +0200
From: Kael D'Alcamo <dev@...l-k.io>
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>
Cc: linux-crypto@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: rng: sparc_sun_oracle_rng: convert to DT schema

Convert the Devicetree binding documentation for:
* SUNW,n2-rng
* SUNW,vf-rng
* SUNW,kt-rng
* ORCL,m4-rng
* ORCL,m7-rng
from plain text to YAML.

Signed-off-by: Kael D'Alcamo <dev@...l-k.io>
---
 .../bindings/rng/sparc_sun_oracle_rng.txt     | 30 ---------
 .../bindings/rng/sparc_sun_oracle_rng.yaml    | 61 +++++++++++++++++++
 2 files changed, 61 insertions(+), 30 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.txt
 create mode 100644 Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.yaml

diff --git a/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.txt b/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.txt
deleted file mode 100644
index b0b211194c71..000000000000
--- a/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-HWRNG support for the n2_rng driver
-
-Required properties:
-- reg		: base address to sample from
-- compatible	: should contain one of the following
-	RNG versions:
-	- 'SUNW,n2-rng' for Niagara 2 Platform (SUN UltraSPARC T2 CPU)
-	- 'SUNW,vf-rng' for Victoria Falls Platform (SUN UltraSPARC T2 Plus CPU)
-	- 'SUNW,kt-rng' for Rainbow/Yosemite Falls Platform (SUN SPARC T3/T4), (UltraSPARC KT/Niagara 3 - development names)
-	more recent systems (after Oracle acquisition of SUN)
-	- 'ORCL,m4-rng' for SPARC T5/M5
-	- 'ORCL,m7-rng' for SPARC T7/M7
-
-Examples:
-/* linux LDOM on SPARC T5-2 */
-Node 0xf029a4f4
-	.node:  f029a4f4
-	rng-#units:  00000002
-	compatible: 'ORCL,m4-rng'
-	reg:  0000000e
-	name: 'random-number-generator'
-
-/* solaris on SPARC M7-8 */
-Node 0xf028c08c
-	rng-#units:  00000003
-	compatible: 'ORCL,m7-rng'
-	reg:  0000000e
-	name:  'random-number-generator'
-
-PS: see as well prtconfs.git by DaveM
diff --git a/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.yaml b/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.yaml
new file mode 100644
index 000000000000..fea6be544784
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/sparc_sun_oracle_rng.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/sparc_sun_oracle_rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HWRNG support for the n2_rng driver
+
+maintainers:
+  - David S. Miller <davem@...emloft.net>
+
+properties:
+  compatible:
+    enum:
+      - SUNW,n2-rng  # for Niagara 2 Platform (SUN UltraSPARC T2 CPU)
+      - SUNW,vf-rng  # for Victoria Falls Platform (SUN UltraSPARC T2 Plus CPU)
+      # for Rainbow/Yosemite Falls Platform (SUN SPARC T3/T4),
+      #  (UltraSPARC KT/Niagara 3 - development names)
+      #  more recent systems (after Oracle acquisition of SUN)
+      - SUNW,kt-rng
+      - ORCL,m4-rng  # for SPARC T5/M5
+      - ORCL,m7-rng  # for SPARC T7/M7
+
+  reg:
+    maxItems: 1
+
+  "rng-#units":
+    description: Number of RNG units
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+# PS: see as well prtconfs.git by DaveM
+examples:
+  - |
+    bus {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rng@e {
+            compatible = "ORCL,m4-rng";
+            reg = <0xe>;
+            rng-#units = <2>;
+        };
+    };
+  - |
+    bus {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rng@e {
+            compatible = "ORCL,m7-rng";
+            reg = <0xe>;
+            rng-#units = <3>;
+        };
+    };
-- 
2.51.0