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Message-ID: <0373ea61e6c765d282c70927030ecba97efcbbef.1720969799.git.daniel@makrotopia.org>
Date: Sun, 14 Jul 2024 16:15:57 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Chen-Yu Tsai <wens@...nel.org>, Aurelien Jarno <aurelien@...el32.net>,
	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>,
	Heiko Stuebner <heiko@...ech.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Dragan Simic <dsimic@...jaro.org>,
	Uwe Kleine-König <ukleinek@...ian.org>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Martin Kaiser <martin@...ser.cx>, Ard Biesheuvel <ardb@...nel.org>,
	linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v7 1/3] dt-bindings: rng: Add Rockchip RK3568 TRNG

From: Aurelien Jarno <aurelien@...el32.net>

Add the True Random Number Generator on the Rockchip RK3568 SoC.

Signed-off-by: Aurelien Jarno <aurelien@...el32.net>
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/rng/rockchip,rk3568-rng.yaml     | 61 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/rockchip,rk3568-rng.yaml

diff --git a/Documentation/devicetree/bindings/rng/rockchip,rk3568-rng.yaml b/Documentation/devicetree/bindings/rng/rockchip,rk3568-rng.yaml
new file mode 100644
index 000000000000..e0595814a6d9
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/rockchip,rk3568-rng.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/rockchip,rk3568-rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip RK3568 TRNG
+
+description: True Random Number Generator on Rockchip RK3568 SoC
+
+maintainers:
+  - Aurelien Jarno <aurelien@...el32.net>
+  - Daniel Golle <daniel@...rotopia.org>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3568-rng
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: TRNG clock
+      - description: TRNG AHB clock
+
+  clock-names:
+    items:
+      - const: core
+      - const: ahb
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3568-cru.h>
+    bus {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      rng@...88000 {
+        compatible = "rockchip,rk3568-rng";
+        reg = <0x0 0xfe388000 0x0 0x4000>;
+        clocks = <&cru CLK_TRNG_NS>, <&cru HCLK_TRNG_NS>;
+        clock-names = "core", "ahb";
+        resets = <&cru SRST_TRNG_NS>;
+      };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index fb1df8c29f5a..7b2b8b1f526c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19693,6 +19693,12 @@ F:	Documentation/userspace-api/media/v4l/metafmt-rkisp1.rst
 F:	drivers/media/platform/rockchip/rkisp1
 F:	include/uapi/linux/rkisp1-config.h
 
+ROCKCHIP RK3568 RANDOM NUMBER GENERATOR SUPPORT
+M:	Daniel Golle <daniel@...rotopia.org>
+M:	Aurelien Jarno <aurelien@...el32.net>
+S:	Maintained
+F:	Documentation/devicetree/bindings/rng/rockchip,rk3568-rng.yaml
+
 ROCKCHIP RASTER 2D GRAPHIC ACCELERATION UNIT DRIVER
 M:	Jacob Chen <jacob-chen@...wrt.com>
 M:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
-- 
2.45.2

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