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

From: Andrew Davis
Date: Wed Jul 06 2022 - 15:08:52 EST


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@xxxxxx>
---

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@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