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Thu, 12 Dec 2024 16:04:12 -0800 From: Ivy Huang To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , Jonathan Hunter , , , Brad Griffis CC: Sumit Gupta , Ivy Huang Subject: [PATCH 2/2] arm64: tegra: disable Tegra234 sce-fabric node Date: Fri, 13 Dec 2024 00:03:05 +0000 Message-ID: <20241213000305.3533971-3-yijuh@nvidia.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20241213000305.3533971-1-yijuh@nvidia.com> References: <20241213000305.3533971-1-yijuh@nvidia.com> X-NVConfidentiality: public Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002BA4D:EE_|CH3PR12MB8509:EE_ X-MS-Office365-Filtering-Correlation-Id: fc00b203-76fa-4b58-ef3c-08dd1b09ae24 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|1800799024; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Dec 2024 00:04:14.5852 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fc00b203-76fa-4b58-ef3c-08dd1b09ae24 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002BA4D.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8509 From: Sumit Gupta 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. Signed-off-by: Sumit Gupta Signed-off-by: Ivy Huang --- 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 d08faf6bb505..05a771ab1ed5 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 { -- 2.17.1