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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by IA0PEPF0000003A.mail.protection.outlook.com (10.167.249.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.522.6 via Frontend Transport; Fri, 16 Oct 2026 09:32:51 +0000 Received: from satlexmb08.amd.com (10.181.42.217) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.53; Fri, 16 Oct 2026 04:32:43 -0500 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server id 15.2.2562.53 via Frontend Transport; Fri, 16 Oct 2026 04:32:38 -0500 From: Srinivas Neeli Date: Fri, 16 Oct 2026 15:02:01 +0530 Subject: [PATCH net-next v3 2/8] net: xilinx: tsn: add TSN endpoint wrapper driver MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20261016-patches_v2_external-v3-2-e33d3960ca1e@amd.com> References: <20261016-patches_v2_external-v3-0-e33d3960ca1e@amd.com> In-Reply-To: <20261016-patches_v2_external-v3-0-e33d3960ca1e@amd.com> To: Nagadheeraj Rottela , Andrew Lunn , "David S. Miller" , "Jakub Kicinski" , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Richard Cochran , "Michal Simek" , Sebastian Andrzej Siewior , Clark Williams , "Steven Rostedt" , Eric Dumazet , "Eric Dumazet" CC: , , , , , Srinivas Neeli , , X-Mailer: b4 0.16.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: IA0PEPF0000003A:EE_|IA0PR12MB9046:EE_ X-MS-Office365-Filtering-Correlation-Id: 013b99b1-4714-4911-21af-08df2b6872b4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|1800799024|376014|7416014|36860700016|82310400026|921020|56012099006|11063799006|261009223027099003|10067099003|18002099003|22082099003|6133799003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(23010399003)(1800799024)(376014)(7416014)(36860700016)(82310400026)(921020)(56012099006)(11063799006)(261009223027099003)(10067099003)(18002099003)(22082099003)(6133799003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: xFkn0uKHX00B7uX9WTPqD88atdM1L50wV3MP6sIslo3vI/i2p6nPiQKWT1AQNcJ1ZdVuCW6kx7PdJqnyWuUs29XHVebi42VLyihAwa7LST3liMVk6quf6oocmCKijP+5SI0aswMByrWL7Tekhb+bJFUqsrMPPe2Yb+c3FFI5ed2cKovfxmsE1P3puIedEuMKI4Pd2YRdFw8TsVOKD31p+5KE4Uy0AQi4lNAcJAp9PH4tq/TqcWB+Zb/fEkTpqWGbKt2iedkH1LlJ92rGqMvaRTsFYG5M3brj74qan2tJo0B7UruR9HhdVlZ+hqv0muaxMHP9AMfu0yd4T8GRuE4E0DCoSq9i4eg6MGrP1sPyVBaZEPt5J/lhL+9B7gUyYV/j69eN9BxIxRMVhWAp4QUtU9Wr8gskWLqnAYiAZxqHFPlOMqzpFHJUI/GhHf4k9sE5 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2026 09:32:51.0543 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 013b99b1-4714-4911-21af-08df2b6872b4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: IA0PEPF0000003A.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB9046 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261016_023257_669485_B7378083 X-CRM114-Status: GOOD ( 25.27 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The TSN Endpoint Ethernet MAC IP groups several sub-nodes under one IP node with a set of IP-wide clocks. Each sub-node needs its own driver, and the shared clocks must be running before any of them probe. Add a thin wrapper platform driver for the IP node. Enable the IP-wide clocks from the device tree and bind each sub-node to its own driver. Co-developed-by: Nagadheeraj Rottela Signed-off-by: Nagadheeraj Rottela Signed-off-by: Srinivas Neeli --- Changes in v2: - Depend on OF_ADDRESS instead of OF && HAS_IOMEM. - Point the Kconfig help text at the companion DSA driver, not a symbol that does not exist yet at this patch. - Drop the mod_devicetable.h include, platform_device.h already pulls it in. --- MAINTAINERS | 1 + drivers/net/ethernet/xilinx/Kconfig | 1 + drivers/net/ethernet/xilinx/Makefile | 1 + drivers/net/ethernet/xilinx/tsn/Kconfig | 15 ++++ drivers/net/ethernet/xilinx/tsn/Makefile | 2 + drivers/net/ethernet/xilinx/tsn/xilinx_tsn_main.c | 104 ++++++++++++++++++++++ 6 files changed, 124 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index d579df0ad578..7cb61c16995d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -29969,6 +29969,7 @@ M: Srinivas Neeli L: netdev@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/net/xlnx,tsn-endpoint-ethernet-mac.yaml +F: drivers/net/ethernet/xilinx/tsn/ XILINX UARTLITE SERIAL DRIVER M: Peter Korsgaard diff --git a/drivers/net/ethernet/xilinx/Kconfig b/drivers/net/ethernet/xilinx/Kconfig index 7502214cc7d5..c6d704c8d3d4 100644 --- a/drivers/net/ethernet/xilinx/Kconfig +++ b/drivers/net/ethernet/xilinx/Kconfig @@ -41,4 +41,5 @@ config XILINX_LL_TEMAC This driver supports the Xilinx 10/100/1000 LocalLink TEMAC core used in Xilinx Spartan and Virtex FPGAs +source "drivers/net/ethernet/xilinx/tsn/Kconfig" endif # NET_VENDOR_XILINX diff --git a/drivers/net/ethernet/xilinx/Makefile b/drivers/net/ethernet/xilinx/Makefile index 7d7dc1771423..66dab012650b 100644 --- a/drivers/net/ethernet/xilinx/Makefile +++ b/drivers/net/ethernet/xilinx/Makefile @@ -8,3 +8,4 @@ obj-$(CONFIG_XILINX_LL_TEMAC) += ll_temac.o obj-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o xilinx_emac-objs := xilinx_axienet_main.o xilinx_axienet_mdio.o obj-$(CONFIG_XILINX_AXI_EMAC) += xilinx_emac.o +obj-$(CONFIG_XILINX_TSN) += tsn/ diff --git a/drivers/net/ethernet/xilinx/tsn/Kconfig b/drivers/net/ethernet/xilinx/tsn/Kconfig new file mode 100644 index 000000000000..b8939d8a92ef --- /dev/null +++ b/drivers/net/ethernet/xilinx/tsn/Kconfig @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Xilinx TSN device configuration +# + +config XILINX_TSN + tristate "Xilinx TSN Ethernet driver" + depends on OF_ADDRESS + help + This driver supports the AMD/Xilinx Time-Sensitive Networking + (TSN) Endpoint Ethernet MAC IP. It provides the wrapper device + and the endpoint MAC that connects the IP to the host CPU. The + three-port switch is supported by the companion DSA driver. + + If unsure, say N. diff --git a/drivers/net/ethernet/xilinx/tsn/Makefile b/drivers/net/ethernet/xilinx/tsn/Makefile new file mode 100644 index 000000000000..6f99226f3dc8 --- /dev/null +++ b/drivers/net/ethernet/xilinx/tsn/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_XILINX_TSN) += xilinx_tsn.o +xilinx_tsn-y := xilinx_tsn_main.o diff --git a/drivers/net/ethernet/xilinx/tsn/xilinx_tsn_main.c b/drivers/net/ethernet/xilinx/tsn/xilinx_tsn_main.c new file mode 100644 index 000000000000..afe7609c67fb --- /dev/null +++ b/drivers/net/ethernet/xilinx/tsn/xilinx_tsn_main.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Time Sensitive Networking (TSN) Ethernet MAC wrapper driver. + * + * Copyright (C) 2026 Advanced Micro Devices, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define TSN_NUM_CLOCKS 6 + +/** + * struct xlnx_tsn_ip - wrapper-private IP state + * @clks: bulk-managed IP clocks + */ +struct xlnx_tsn_ip { + struct clk_bulk_data clks[TSN_NUM_CLOCKS]; +}; + +static const char * const tsn_clk_names[TSN_NUM_CLOCKS] = { + "gtx", + "gtx90", + "host_rxfifo", + "host_txfifo", + "ref", + "s_axi", +}; + +static void tsn_clk_bulk_disable(void *data) +{ + struct xlnx_tsn_ip *w = data; + + clk_bulk_disable_unprepare(TSN_NUM_CLOCKS, w->clks); +} + +static int tsn_ip_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct xlnx_tsn_ip *w; + int ret; + + w = devm_kzalloc(dev, sizeof(*w), GFP_KERNEL); + if (!w) + return -ENOMEM; + + for (int i = 0; i < TSN_NUM_CLOCKS; i++) + w->clks[i].id = tsn_clk_names[i]; + + ret = devm_clk_bulk_get(dev, TSN_NUM_CLOCKS, w->clks); + if (ret) + return dev_err_probe(dev, ret, "failed to get clocks\n"); + + ret = clk_bulk_prepare_enable(TSN_NUM_CLOCKS, w->clks); + if (ret) + return dev_err_probe(dev, ret, "failed to enable clocks\n"); + + ret = devm_add_action_or_reset(dev, tsn_clk_bulk_disable, w); + if (ret) + return ret; + + return devm_of_platform_populate(dev); +} + +static const struct of_device_id tsn_of_match[] = { + { .compatible = "xlnx,tsn-endpoint-ethernet-mac-3.0" }, + { } +}; +MODULE_DEVICE_TABLE(of, tsn_of_match); + +static struct platform_driver tsn_driver = { + .probe = tsn_ip_probe, + .driver = { + .name = "xilinx-tsn", + .of_match_table = tsn_of_match, + }, +}; + +static struct platform_driver * const tsn_drivers[] = { + &tsn_driver, +}; + +static int __init xlnx_tsn_init(void) +{ + return platform_register_drivers(tsn_drivers, ARRAY_SIZE(tsn_drivers)); +} +module_init(xlnx_tsn_init); + +static void __exit xlnx_tsn_exit(void) +{ + platform_unregister_drivers(tsn_drivers, ARRAY_SIZE(tsn_drivers)); +} +module_exit(xlnx_tsn_exit); + +MODULE_AUTHOR("Srinivas Neeli "); +MODULE_DESCRIPTION("AMD/Xilinx TSN Endpoint Ethernet MAC wrapper driver"); +MODULE_LICENSE("GPL"); -- 2.44.4