[PATCH v2 1/4] arm64: dts: ti: k3-am65-main: Disable RNG node

Andrew Davis afd at ti.com
Wed Jul 6 12:08:35 PDT 2022


The hardware random number generator is used by OP-TEE and is access is
denied to other users with SoC level bus firewalls. Any access to this
device from Linux will result in firewall errors. Disable this node.

Signed-off-by: Andrew Davis <afd at ti.com>
---

Changes from v1:
 - Added comment in dtsi file

 arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
index e749343accedd..9de5a8294acd6 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
@@ -127,6 +127,7 @@ rng: rng at 4e10000 {
 			reg = <0x0 0x4e10000 0x0 0x7d>;
 			interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&k3_clks 136 1>;
+			status = "disabled"; /* Used by OP-TEE */
 		};
 	};
 
-- 
2.36.1




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