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>
---
Changes in v2:
- Reorder RNG node placement based on unit address (feedback from vigneshr@ti.com)
- Link to v1: https://lore.kernel.org/all/20260210130058.3458936-1-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..80615ca1e01a 100644
--- a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
@@ -564,6 +564,13 @@ gpmc0: memory-controller@3b000000 {
 		status = "disabled";
 	};
 
+	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 */
+	};
+
 	oc_sram: sram@70800000 {
 		compatible = "mmio-sram";
 		reg = <0x00 0x70800000 0x00 0x10000>;
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

Hi Shiva Tripathi,

On Mon, 09 Mar 2026 15:46:50 +0530, 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.
> 
> [...]

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/1] arm64: dts: ti: k3-am62l: Add RNG node
      commit: c9c61275fd270c09e1dfe82794f90ad10604fd5d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh