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Tue, 18 Nov 2025 06:07:32 -0800 From: Akhil R To: , , , , , , , , CC: , , , Subject: [PATCH v13 6/6] i2c: tegra: Add Tegra264 support Date: Tue, 18 Nov 2025 19:36:20 +0530 Message-ID: <20251118140620.549-7-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20251118140620.549-1-akhilrajeev@nvidia.com> References: <20251118140620.549-1-akhilrajeev@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF00000206:EE_|IA1PR12MB8079:EE_ X-MS-Office365-Filtering-Correlation-Id: 91c1ba48-5eac-4215-d9bf-08de26abddfb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?33n0FFVpd3hsI3AVFY+cZuQFjZa9ZUIAh4vPwg+gC87+vJqWlbLeCNZeFwTk?= =?us-ascii?Q?h2u4eZg++cs1VKgJJU8R1h/vr8iyBn5JcNTnS/Pu70Q59I0kehQGoFWyiB+/?= =?us-ascii?Q?PAtMQGlVx2Fg1ep9gXyBveXFAzu9HlnvRAHGVufxYtkHFoUj8wtq56HGa4/S?= =?us-ascii?Q?sXM3XwJstJuthbRDDJ2GBI09DUpMKVLv8EICCzqfbX6/j98+tYJErNS/Q7+f?= =?us-ascii?Q?peCHQSgZ4XeEiNOILpykRqoYgcWTpSCkHMi+WeDo5jfTe8fqyI5P2ozd6hnv?= =?us-ascii?Q?b57OAkRTTpeSu3vIGzrBXYdAgFIP7g0HnRj9FuT86wv48hdYgcJj4+XSmaxQ?= =?us-ascii?Q?MKbAZqlrJ9sDI6jLcKzgoEWXhng+F1QrXZTAZMcRYaOV4BMEmQGob/D+p9SY?= =?us-ascii?Q?K60Hjrm39nQwKqa//cyzJXGhTaf+pKSdg3nGbpkFcmuHbDubH4uQpda4I+yW?= =?us-ascii?Q?mqrRpY5jj4+zOlxd/wsYcX2HlzOgN1N2Nk+u+6+pUbMI3GfZiSzgr09Q/MDl?= =?us-ascii?Q?9lr67hq/SQbCMhcYdJjLLGrHEsJTioCE6LrDT4jziasHJxrXqHMcv3IjPY+k?= =?us-ascii?Q?vWhNOl0spVEQvDYxjVBh/IcpfCVp1QqGI3fFEC/TGj2wTV1G/+k7px6TAxU6?= =?us-ascii?Q?0KnycMZx3tREAwKsJ9S6Dp3QXaEXk1gHc1xuzDn8jjCQD/FvaPWSHty40K9B?= =?us-ascii?Q?GuecAcbv79yMIZIgfvAA5sCY/BTi27CcUjBjH8wYVK6cnM1sQ5W5qqaTA4nK?= =?us-ascii?Q?uaB/0R9ilPsmaWjTfsRCCENXqqz97YgJ3JH9+wqhdqtG3TdlRYOls9/8V3FT?= =?us-ascii?Q?eXFlzcMUOJmDrawKZWFhyoKiVmrdna4klesZ2ntf+rCUPhI6wFJcSLkpc7kG?= =?us-ascii?Q?MDArLfyjnOWBEsbCIAXPjvoTIyq4aQhQl5ekfxV1mpChlWrSfGWFatr/B9lD?= =?us-ascii?Q?1vxTzv5xOzdmtSRZBm1FDYvPuDsmzTxbgkmjTUruogdgqqi5J2E7JqfgejqX?= =?us-ascii?Q?WNXZgbdYkGvRf5JvngILoP8mrMIOO/Li//jQGvQU4YhhJK7SskMSjcd2TeoB?= =?us-ascii?Q?8hhFMeWZSJ7hISleMopSBi61yYI4tWaJeWc3VhY+6gSPZyl/7K1NCccnAyUz?= =?us-ascii?Q?b6nAoET7+FOxPLvgWu/4PdWgyMO9Sk8A168wUHmvHVuBkr6L2cWyJvsOy+Vw?= =?us-ascii?Q?yxtu7EIRqsUgS1PxvxiGyuobMfEdPdXvYQKxFvDTYotCBfDVzCBbe+eWpfSY?= =?us-ascii?Q?q21/2w6gPjADQVv2qfxhm8sv9hQIU/bBl2ctGtgnXmRQ00AqDGkMtn/xXVHv?= =?us-ascii?Q?KiFx0TSuOa6AK2SSLEIs05YKZppI35zKxfnS1nJDemyflPG/mpJqv7ubsPGW?= =?us-ascii?Q?M9nvS5vIQBCP1rM9qdjsTsiXVZ3qhdtsg2gfcDRZhwIjRG3GfAbdERCydPue?= =?us-ascii?Q?Lj8G+hcYTkt0n7BQ63M/7tB2ECCnSvRgzqrwWhAZDtEl5v6puwKnRdE75gZt?= =?us-ascii?Q?DhhqfGZIznDA0crvi8wFVk5K+BuI+f9unKhvNiyrkfR9qom8xnw9+F1S9y5v?= =?us-ascii?Q?vV5KJGaVd2wED18doI4=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(82310400026)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Nov 2025 14:07:53.7473 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 91c1ba48-5eac-4215-d9bf-08de26abddfb X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF00000206.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB8079 Content-Type: text/plain; charset="utf-8" Add support for Tegra264 SoC which supports 17 generic I2C controllers, two of which are in the AON (always-on) partition of the SoC. In addition to the features supported by Tegra194 it also supports a SW mutex register to allow sharing the same I2C instance across multiple firmware. Signed-off-by: Akhil R Signed-off-by: Kartik Rajput Reviewed-by: Jon Hunter Acked-by: Thierry Reding --- v4 -> v10: * Set has_mst_reset =3D true for Tegra264. v1 -> v4: * Update commit message to mention the SW mutex feature available on Tegra264. --- drivers/i2c/busses/i2c-tegra.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 51af857d44d6..0638ccdef313 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -1853,7 +1853,40 @@ static const struct tegra_i2c_hw_feature tegra256_i2= c_hw =3D { .has_mutex =3D true, }; =20 +static const struct tegra_i2c_hw_feature tegra264_i2c_hw =3D { + .has_continue_xfer_support =3D true, + .has_per_pkt_xfer_complete_irq =3D true, + .clk_divisor_hs_mode =3D 1, + .clk_divisor_std_mode =3D 0x1d, + .clk_divisor_fast_mode =3D 0x15, + .clk_divisor_fast_plus_mode =3D 0x8, + .has_config_load_reg =3D true, + .has_multi_master_mode =3D true, + .has_slcg_override_reg =3D true, + .has_mst_fifo =3D true, + .has_mst_reset =3D true, + .quirks =3D &tegra194_i2c_quirks, + .supports_bus_clear =3D true, + .has_apb_dma =3D false, + .tlow_std_mode =3D 0x8, + .thigh_std_mode =3D 0x7, + .tlow_fast_mode =3D 0x2, + .thigh_fast_mode =3D 0x2, + .tlow_fastplus_mode =3D 0x2, + .thigh_fastplus_mode =3D 0x2, + .tlow_hs_mode =3D 0x4, + .thigh_hs_mode =3D 0x2, + .setup_hold_time_std_mode =3D 0x08080808, + .setup_hold_time_fast_mode =3D 0x02020202, + .setup_hold_time_fastplus_mode =3D 0x02020202, + .setup_hold_time_hs_mode =3D 0x090909, + .has_interface_timing_reg =3D true, + .enable_hs_mode_support =3D true, + .has_mutex =3D true, +}; + static const struct of_device_id tegra_i2c_of_match[] =3D { + { .compatible =3D "nvidia,tegra264-i2c", .data =3D &tegra264_i2c_hw, }, { .compatible =3D "nvidia,tegra256-i2c", .data =3D &tegra256_i2c_hw, }, { .compatible =3D "nvidia,tegra194-i2c", .data =3D &tegra194_i2c_hw, }, { .compatible =3D "nvidia,tegra186-i2c", .data =3D &tegra186_i2c_hw, }, --=20 2.50.1