linux-kernel - [PATCH v2 3/3] arm64: dts: imx94: Add OCOTP node

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Message-Id: <20251020-imx94-v1-3-0b4b58a57bf9@nxp.com>
Date: Mon, 20 Oct 2025 18:50:44 +0800
From: alice.guo@....nxp.com
To: Srinivas Kandagatla <srini@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Alice Guo <alice.guo@....com>
Subject: [PATCH v2 3/3] arm64: dts: imx94: Add OCOTP node

From: Alice Guo <alice.guo@....com>

Add OCOTP node to the i.MX94 device tree. This enables support for
accessing eFuse on i.MX94 SoCs via the NVMEM subsystem.

Signed-off-by: Alice Guo <alice.guo@....com>
---
 arch/arm64/boot/dts/freescale/imx94.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx94.dtsi b/arch/arm64/boot/dts/freescale/imx94.dtsi
index d4a880496b0e..8728b3aa15a7 100644
--- a/arch/arm64/boot/dts/freescale/imx94.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx94.dtsi
@@ -1173,6 +1173,13 @@ a55_irqsteer: interrupt-controller@...a0000 {
 			};
 		};
 
+		ocotp: efuse@...10000 {
+			compatible = "fsl,imx94-ocotp", "syscon";
+			reg = <0x0 0x47510000 0x0 0x10000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
+
 		aips4: bus@...00000 {
 			compatible = "fsl,aips-bus", "simple-bus";
 			reg = <0x0 0x49000000 0x0 0x800000>;

-- 
2.43.0