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Mon, 9 Jun 2025 02:34:30 -0700 From: Kartik Rajput To: , , , , , , , , , , , , Subject: [PATCH v3 2/5] i2c: tegra: Do not configure DMA if not supported Date: Mon, 9 Jun 2025 15:04:17 +0530 Message-ID: <20250609093420.3050641-3-kkartik@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250609093420.3050641-1-kkartik@nvidia.com> References: <20250609093420.3050641-1-kkartik@nvidia.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B36D:EE_|SN7PR12MB7786:EE_ X-MS-Office365-Filtering-Correlation-Id: 505a65a5-fa0d-41e8-3b33-08dda738e141 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|7416014|376014|36860700013|1800799024|82310400026|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge1.nvidia.com; CAT:NONE; SFS:(13230040)(7416014)(376014)(36860700013)(1800799024)(82310400026)(921020); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2025 09:34:49.3650 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 505a65a5-fa0d-41e8-3b33-08dda738e141 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: BN3PEPF0000B36D.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7786 On Tegra264, not all I2C controllers have the necessary interface to GPC DMA, this causes failures when function tegra_i2c_init_dma() is called. Ensure that "dmas" device-tree property is present before initializing DMA in function tegra_i2c_init_dma(). Signed-off-by: Kartik Rajput --- v1 -> v2: * Update commit message to clarify that some I2C controllers may not have the necessary interface to GPC DMA. --- drivers/i2c/busses/i2c-tegra.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index ebd51165c46b..c7237d26b813 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -448,6 +448,9 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev) if (IS_VI(i2c_dev)) return 0; + if (!device_property_present(i2c_dev->dev, "dmas")) + return 0; + if (i2c_dev->hw->has_apb_dma) { if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) { dev_dbg(i2c_dev->dev, "APB DMA support not enabled\n");