From ae36b1f23cb2013d8c14df1c8e1b92f4f145199b Mon Sep 17 00:00:00 2001 From: Sumit Gupta Date: Wed, 18 Dec 2024 00:07:37 +0000 Subject: [PATCH] arm64: tegra: Disable Tegra234 sce-fabric node commit a5e6fc0a10fe280989f1367a3b4f8047c7d00ea6 upstream. Access to safety cluster engine (SCE) fabric registers was blocked by firewall after the introduction of Functional Safety Island in Tegra234. After that, any access by software to SCE registers is correctly resulting in the internal bus error. However, when CPUs try accessing the SCE-fabric registers to print error info, another firewall error occurs as the fabric registers are also firewall protected. This results in a second error to be printed. Disable the SCE fabric node to avoid printing the misleading error. The first error info will be printed by the interrupt from the fabric causing the actual access. Cc: stable@vger.kernel.org Fixes: 302e154000ec ("arm64: tegra: Add node for CBB 2.0 on Tegra234") Signed-off-by: Sumit Gupta Signed-off-by: Ivy Huang Reviewed-by: Brad Griffis Reviewed-by: Jon Hunter Link: https://lore.kernel.org/r/20241218000737.1789569-3-yijuh@nvidia.com Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/nvidia/tegra234.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi index da2694670fa0dd..2601b43b2d8cad 100644 --- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi @@ -3815,7 +3815,7 @@ compatible = "nvidia,tegra234-sce-fabric"; reg = <0x0 0xb600000 0x0 0x40000>; interrupts = ; - status = "okay"; + status = "disabled"; }; rce-fabric@be00000 {