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Message-ID: <20220705170340.26719-3-afd@ti.com>
Date: Tue, 5 Jul 2022 12:03:37 -0500
From: Andrew Davis <afd@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
Tero Kristo <kristo@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: Andrew Davis <afd@...com>
Subject: [PATCH 3/6] arm64: dts: ti: k3-am65-main: Disable RNG node
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@...com>
---
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..113e959ba06d0 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@...0000 {
reg = <0x0 0x4e10000 0x0 0x7d>;
interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&k3_clks 136 1>;
+ status = "disabled";
};
};
--
2.36.1
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