linux-kernel - [PATCH 3/3] arm64: dts: rockchip: add RK3576 RNG node

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Message-Id: <20250430-rk3576-hwrng-v1-3-480c15b5843e@collabora.com>
Date: Wed, 30 Apr 2025 18:16:36 +0200
From: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
To: Daniel Golle <daniel@...rotopia.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>, 
 Jonas Karlman <jonas@...boo.se>
Cc: Sebastian Reichel <sebastian.reichel@...labora.com>, 
 kernel@...labora.com, 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, 
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Subject: [PATCH 3/3] arm64: dts: rockchip: add RK3576 RNG node

The RK3576 has a hardware random number generator IP built into the SoC.

Add it to the SoC's .dtsi, now that there's a binding and driver for it.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
---
 arch/arm64/boot/dts/rockchip/rk3576.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576.dtsi b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
index a6bfef82d50bc9b0203a04324d61e0f232b61a65..ce8bcab215c0e6b7786ab3baae6977072497ed2f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi
@@ -1527,6 +1527,14 @@ sfc0: spi@...40000 {
 			status = "disabled";
 		};
 
+		rng: rng@...10000 {
+			compatible = "rockchip,rk3576-rng";
+			reg = <0x0 0x2a410000 0x0 0x200>;
+			clocks = <&cru HCLK_TRNG_NS>;
+			interrupts = <GIC_SPI 181 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&cru SRST_H_TRNG_NS>;
+		};
+
 		otp: otp@...80000 {
 			compatible = "rockchip,rk3576-otp";
 			reg = <0x0 0x2a580000 0x0 0x400>;

-- 
2.49.0