Commit 67106d21 authored Sep 26, 2025 by Shiva Tripathi Committed by Vignesh Raghavendra Oct 29, 2025

arm64: dts: ti: k3-am62: Add RNG node



Add EIP76 Random Number Generator (RNG) node within crypto engine for
AM62 and AM62A SoCs. The RNG hardware is integrated in crypto
subsystem at address 0x40910000.

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>
Link: https://patch.msgid.link/20250926100229.923547-1-s-tripathi1@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

parent a00ee801

arch/arm64/boot/dts/ti/k3-am62-main.dtsi

+10 −0

Original line number	Diff line number	Diff line
		@@ -214,6 +214,16 @@ crypto: crypto@40900000 {
		dmas = <&main_pktdma 0xf501 0>, <&main_pktdma 0x7506 0>,
		<&main_pktdma 0x7507 0>;
		dma-names = "tx", "rx1", "rx2";
		#address-cells = <2>;
		#size-cells = <2>;
		ranges = <0x00 0x40900000 0x00 0x40900000 0x00 0x30000>;

		rng: rng@40910000 {
		compatible = "inside-secure,safexcel-eip76";
		reg = <0x00 0x40910000 0x00 0x7d>;
		interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>;
		status = "reserved"; /* Reserved for OP-TEE */
		};
		};

		secure_proxy_sa3: mailbox@43600000 {

arch/arm64/boot/dts/ti/k3-am62a-main.dtsi

+10 −0

Original line number	Diff line number	Diff line
		@@ -247,6 +247,16 @@ crypto: crypto@40900000 {
		dmas = <&main_pktdma 0xf501 0>, <&main_pktdma 0x7506 0>,
		<&main_pktdma 0x7507 0>;
		dma-names = "tx", "rx1", "rx2";
		#address-cells = <2>;
		#size-cells = <2>;
		ranges = <0x00 0x40900000 0x00 0x40900000 0x00 0x30000>;

		rng: rng@40910000 {
		compatible = "inside-secure,safexcel-eip76";
		reg = <0x00 0x40910000 0x00 0x7d>;
		interrupts = <GIC_SPI 129 IRQ_TYPE_LEVEL_HIGH>;
		status = "reserved"; /* Reserved for OP-TEE */
		};
		};

		secure_proxy_sa3: mailbox@43600000 {