linux-kernel - [PATCH 2/2] dt-bindings: rng: Add MediaTek MT7981 TRNG

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Message-ID: <c750e786ad0f529d2ae63c8f766d3c294808ff53.1676467500.git.daniel@makrotopia.org>
Date:   Wed, 15 Feb 2023 13:27:30 +0000
From:   Daniel Golle <daniel@...rotopia.org>
To:     devicetree@...r.kernel.org, Sean Wang <sean.wang@...iatek.com>,
        Olivia Mackall <olivia@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Mingming Su <Mingming.Su@...iatek.com>,
        linux-crypto@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: rng: Add MediaTek MT7981 TRNG

Add documentation to describe the MediaTek true random number generator
which is provided by ARM TrustedFirmware-A of the MT7981.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 .../bindings/rng/mediatek,mt7981-rng.yaml     | 39 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml

diff --git a/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml b/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml
new file mode 100644
index 000000000000..d577d60538d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/mediatek,mt7981-rng.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/mediatek,mt7981-rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Random number generator (v2/SMC)
+
+maintainers:
+  - Daniel Golle <daniel@...rotopia.org>
+
+properties:
+  $nodename:
+    pattern: "^rng$"
+
+  compatible:
+    enum:
+      - mediatek,mt7981-rng
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: rng
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    rng {
+      compatible = "mediatek,mt7981-rng";
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 90d82aba6d73..523f1abf00d5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13148,6 +13148,7 @@ F:	drivers/leds/leds-mt6323.c
 MEDIATEK RANDOM NUMBER GENERATOR SUPPORT
 M:	Sean Wang <sean.wang@...iatek.com>
 S:	Maintained
+F:	Documentation/devicetree/bindings/rng/mediatek,*
 F:	drivers/char/hw_random/mtk-rng-v2.c
 F:	drivers/char/hw_random/mtk-rng.c
 
-- 
2.39.1