Add EIP76 Random Number Generator (RNG) node for AM62L SoC. Unlike
other k3 platforms, AM62L RNG is integrated outside crypto subsystem
at address 0x3b100000, requiring an additional entry in cbass_main
memory map.

Mark the RNG node with status "reserved" as it is intended for use by
OP-TEE for secure random number generation. If required, this hardware
can also be used through Linux kernel by enabling this node.

Signed-off-by: Shiva Tripathi <s-tripathi1@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62l-main.dtsi | 7 +++++++
 arch/arm64/boot/dts/ti/k3-am62l.dtsi      | 1 +
 2 files changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
index 883beb76ba9c..1b5f90b1ee61 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
@@ -577,4 +577,11 @@ scmi_shmem: sram@0 {
 			bootph-all;
 		};
 	};
+
+	rng: rng@3b100000 {
+		compatible = "inside-secure,safexcel-eip76";
+		reg = <0x00 0x3b100000 0x00 0x7d>;
+		interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+		status = "reserved"; /* Reserved for OP-TEE */
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am62l.dtsi b/arch/arm64/boot/dts/ti/k3-am62l.dtsi
index 23acdbb301fe..b7d4da303456 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62l.dtsi
@@ -79,6 +79,7 @@ cbass_main: bus@f0000 {
 			 <0x00 0x31000000 0x00 0x31000000 0x00 0x00050000>, /* USB0 DWC3 Core Window */
 			 <0x00 0x31100000 0x00 0x31100000 0x00 0x00050000>, /* USB1 DWC3 Core Window */
 			 <0x00 0x3b000000 0x00 0x3b000000 0x00 0x00000400>, /* GPMC0 */
+			 <0x00 0x3b100000 0x00 0x3b100000 0x00 0x0000007d>, /* RNG */
 			 <0x00 0x45810000 0x00 0x45810000 0x00 0x03170000>, /* DMSS */
 			 <0x00 0x50000000 0x00 0x50000000 0x00 0x08000000>, /* GPMC DATA */
 			 <0x00 0x60000000 0x00 0x60000000 0x00 0x08000000>, /* FSS DAT1 */
-- 
2.34.1

On 10/02/26 18:30, Shiva Tripathi wrote:
> Add EIP76 Random Number Generator (RNG) node for AM62L SoC. Unlike
> other k3 platforms, AM62L RNG is integrated outside crypto subsystem
> at address 0x3b100000, requiring an additional entry in cbass_main
> memory map.
> 
> Mark the RNG node with status "reserved" as it is intended for use by
> OP-TEE for secure random number generation. If required, this hardware
> can also be used through Linux kernel by enabling this node.
> 
> Signed-off-by: Shiva Tripathi <s-tripathi1@ti.com>
> ---
>  arch/arm64/boot/dts/ti/k3-am62l-main.dtsi | 7 +++++++
>  arch/arm64/boot/dts/ti/k3-am62l.dtsi      | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> index 883beb76ba9c..1b5f90b1ee61 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> @@ -577,4 +577,11 @@ scmi_shmem: sram@0 {
>  			bootph-all;
>  		};
>  	};
> +
> +	rng: rng@3b100000 {
> +		compatible = "inside-secure,safexcel-eip76";
> +		reg = <0x00 0x3b100000 0x00 0x7d>;
> +		interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
> +		status = "reserved"; /* Reserved for OP-TEE */
> +	};

See Documentation/devicetree/bindings/dts-coding-style.rst . Place the
node at right location based on the address.


>  };
> diff --git a/arch/arm64/boot/dts/ti/k3-am62l.dtsi b/arch/arm64/boot/dts/ti/k3-am62l.dtsi
> index 23acdbb301fe..b7d4da303456 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62l.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62l.dtsi
> @@ -79,6 +79,7 @@ cbass_main: bus@f0000 {
>  			 <0x00 0x31000000 0x00 0x31000000 0x00 0x00050000>, /* USB0 DWC3 Core Window */
>  			 <0x00 0x31100000 0x00 0x31100000 0x00 0x00050000>, /* USB1 DWC3 Core Window */
>  			 <0x00 0x3b000000 0x00 0x3b000000 0x00 0x00000400>, /* GPMC0 */
> +			 <0x00 0x3b100000 0x00 0x3b100000 0x00 0x0000007d>, /* RNG */
>  			 <0x00 0x45810000 0x00 0x45810000 0x00 0x03170000>, /* DMSS */
>  			 <0x00 0x50000000 0x00 0x50000000 0x00 0x08000000>, /* GPMC DATA */
>  			 <0x00 0x60000000 0x00 0x60000000 0x00 0x08000000>, /* FSS DAT1 */

-- 
Regards
Vignesh
https://ti.com/opensource