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Thu, 10 Jul 2025 06:12:32 -0700 From: Akhil R To: , , , , , , , , , CC: , , , , Subject: [PATCH v6 0/3] i2c: tegra: Improve reset and DMA operations Date: Thu, 10 Jul 2025 18:42:03 +0530 Message-ID: <20250710131206.2316-1-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF0000231E:EE_|LV8PR12MB9451:EE_ X-MS-Office365-Filtering-Correlation-Id: a2ff7b61-0cfa-4ba0-15f6-08ddbfb3789b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|7416014|36860700013|376014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?uRMgjhDeD9sivV1V/l2x5tt9xCIXfuiK8b57k4k8qy2rECZdF4NSJv0cxNjG?= =?us-ascii?Q?S5GgyU7BG9aViGyb6Z2QptSxitwCf45QzyO17X28gSpGtYyRPxOJ3LytXKlu?= =?us-ascii?Q?2KrLPN9+Zc6Hyf++/yLFHnMNPUSVf3fFGFk2xYouLfRDTYcHbcSucXu24KUV?= =?us-ascii?Q?cl56T6CCNS+T93CiqLEI14QRg9QQ9tCTGcbGzekI3Yq7QBQKYusj45QgQNLJ?= =?us-ascii?Q?90sVJJaV3GHBKthyFEC4su8eX/Cj4XQfPONtC59VZ67sKzKzWbQdgjhPIJEi?= =?us-ascii?Q?HIvAaw3Jjh1sIFNOSfOYctdfNXDlLf46U6wyPsgdNFyeo3KPeNq5o0bUmGbS?= =?us-ascii?Q?UXXQlSXYDARCtQXcvV7qqW1cQ3L/LrFrHeeMbgobjTG5rLvTXUQG28AGa8iY?= =?us-ascii?Q?mtjlCe4k1Y/VSf6DsU45zfVTJHaIPdLGhEuCRtt0rcpGLbg/ArNnH11XSdZy?= =?us-ascii?Q?/MBqKSgL8LngvWXTEHwHOmXdMZk1j9DfuLipY5/yOTAuhuJ6j8mQSxR3gcaK?= =?us-ascii?Q?saXqhDtHoyRDCVCiwwrjJErcK+f7WxX9avsVDiyks8DD8dfcPE6BtsUD7GHb?= =?us-ascii?Q?rUR8UPlW2xP6qN4xoXjzCCK3O098DLOrQcwBqQ1FuHytQURKLYww43k2paZt?= =?us-ascii?Q?rClsxnPFZ7Q6Vo3so8KL5MWzsUocawRO/iPtr+MlrDNko3XJ/vCO3r8b/9IV?= =?us-ascii?Q?CaP2WMvwpU0cqbkAfVoxPf/j+V+0xpGocCt44VDXnGK3+o0XzF8hC6LrNs1R?= =?us-ascii?Q?VDc9YW3lE/R4govsFb/9F89U9kK0u3jXWtQAl8xU3ckkaKb6RUy8iZYcZWgX?= =?us-ascii?Q?hvUwsFE8qcrx6gNw3eHKWp9vz8ssvw0YWu41wmSylgbc4Ze5/Qu+04QL+ILX?= =?us-ascii?Q?fBpQpCECsakHImlAMoOm8fPyLLBhBIE622zcrI0nrIozvt/EfKQeKj63lXuB?= =?us-ascii?Q?q8aNLPp+4J/gbenRbfVMEpC1WeVNVEasFlWMp5yV8rtI2Rh0F/fnwDh1nOOA?= =?us-ascii?Q?pky17xCbDPMuhb7fH184JKqmeBPlBzsuE1geUoT1ClawhrnVtXkVssbpeb+6?= =?us-ascii?Q?QGT6AGpxZG8k3IHWcCsczvBT1eOlKPOsnKG/ok3+zwcE4qXD763CQSyPLp3N?= =?us-ascii?Q?MvI5v1YvIRjQoP4A1POnK1Dne2FfJ1UZdJIM0FcV9nXLKp67sBggn9OmIwUA?= =?us-ascii?Q?dUNRfU0zajGOAyx/2H7Zi1WlHYeNvRlwTWHMXaOlWICWGBLYwgiYz5SBtA9Y?= =?us-ascii?Q?ojZpQP5YBcamOwLShsFNX9LwKhcmm4BT7pNfTsDLzmoHiXZGH9qSMLINcZbL?= =?us-ascii?Q?19jz+l3xgVdY22YBqEHPKZJ4zoapOAe64+hvf5MAEQfMboglGiO3OSzGKtrJ?= =?us-ascii?Q?lldvEJO+7LyN3fxNkwi2fRDJmvqbWReDEfxvx0jRbH9XtN/uUFF3DQhoPMC7?= =?us-ascii?Q?FQ5Rs1GcVuSmtDdfLfTMw1IgmJ7GKZPkxYMXxV+a5OE5f5eUWh9pRlhNPM0K?= =?us-ascii?Q?dC+Ub/bx9re8mRan8A3RVzLEAJAiSAlfNKc+7nB+OI/ahY5drCtiUkgl4eIg?= =?us-ascii?Q?QGW+1VOHTfPncm8hv44=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(7416014)(36860700013)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jul 2025 13:12:49.8572 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a2ff7b61-0cfa-4ba0-15f6-08ddbfb3789b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF0000231E.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9451 This patch series contains the following changes: 1. Fix ACPI reset error handling by using device_reset() instead of acpi_evaluate_object() directly, which properly handles ACPI error codes. 2. Add support for internal software reset as a fallback when external reset control is not available, particularly useful for platforms that restrict reset control from Linux or don't implement ACPI _RST method. 3. Remove unnecessary dma_sync_*() calls on dma_alloc_coherent() buffers, which were redundant and could cause issues. v5->v6: - Use device_reset() instead of acpi_evaluate_object() directly - Added a brief description for internal reset. - Added a cover letter. v5: https://lore.kernel.org/linux-tegra/20250704064704.23003-1-akhilrajeev@nvidia.com/T/#m21ab8542cf92d6daafb6db9dc90b03eb63de8bbc Akhil R (3): i2c: tegra: Fix reset error handling with ACPI i2c: tegra: Use internal reset when reset property is not available i2c: tegra: Remove dma_sync_*() calls drivers/i2c/busses/i2c-tegra.c | 77 ++++++++++++++++------------------ 1 file changed, 36 insertions(+), 41 deletions(-) -- 2.50.1