arm64: tegra: Disable Tegra234 sce-fabric node
authorSumit Gupta <sumitg@nvidia.com>
Wed, 18 Dec 2024 00:07:37 +0000 (00:07 +0000)
committerThierry Reding <treding@nvidia.com>
Thu, 9 Jan 2025 13:18:00 +0000 (14:18 +0100)
commita5e6fc0a10fe280989f1367a3b4f8047c7d00ea6
tree86d6ede36347e559ba273a75fec4f54436dc2f6d
parent604120fd9e9df50ee0e803d3c6e77a1f45d2c58e
arm64: tegra: Disable Tegra234 sce-fabric node

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 <sumitg@nvidia.com>
Signed-off-by: Ivy Huang <yijuh@nvidia.com>
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20241218000737.1789569-3-yijuh@nvidia.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
arch/arm64/boot/dts/nvidia/tegra234.dtsi