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GET /api/patches/2223552/?format=api
{ "id": 2223552, "url": "http://patchwork.ozlabs.org/api/patches/2223552/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260415152152.3048491-2-u-kumar1@ti.com/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260415152152.3048491-2-u-kumar1@ti.com>", "list_archive_url": null, "date": "2026-04-15T15:21:50", "name": "[v2,1/3] arm: mach-k3: arm: mach-k3: Add writel_verify macro for register write verification", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c9f46c811d60b21b1ead741029cc3cf185246d3a", "submitter": { "id": 86225, "url": "http://patchwork.ozlabs.org/api/people/86225/?format=api", "name": "Udit Kumar", "email": "u-kumar1@ti.com" }, "delegate": { "id": 3651, "url": "http://patchwork.ozlabs.org/api/users/3651/?format=api", "username": "trini", "first_name": "Tom", "last_name": "Rini", "email": "trini@ti.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260415152152.3048491-2-u-kumar1@ti.com/mbox/", "series": [ { "id": 500003, "url": "http://patchwork.ozlabs.org/api/series/500003/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=500003", "date": "2026-04-15T15:21:49", "name": "j721s2: j784s4: Add workaround for errata i2437", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500003/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223552/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223552/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<u-boot-bounces@lists.denx.de>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256\n header.s=selector1 header.b=IzXHukuU;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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helo=lewvzet201.ext.ti.com; pr=C", "From": "Udit Kumar <u-kumar1@ti.com>", "To": "<vigneshr@ti.com>, <trini@konsulko.com>, <m-chawdhry@ti.com>", "CC": "<bb@ti.com>, <n-francis@ti.com>, <nm@ti.com>, <gehariprasath@ti.com>,\n <u-boot@lists.denx.de>, Udit Kumar <u-kumar1@ti.com>", "Subject": "[PATCH v2 1/3] arm: mach-k3: arm: mach-k3: Add writel_verify macro\n for register write verification", "Date": "Wed, 15 Apr 2026 20:51:50 +0530", "Message-ID": "<20260415152152.3048491-2-u-kumar1@ti.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260415152152.3048491-1-u-kumar1@ti.com>", "References": "<20260415152152.3048491-1-u-kumar1@ti.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-C2ProcessedOrg": "333ef613-75bf-4e12-a4b1-8e3623f5dcea", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "CY4PEPF0000E9DB:EE_|DS0PR10MB997603:EE_", "X-MS-Office365-Filtering-Correlation-Id": "fea9189a-f2fa-4933-ddad-08de9b02c189", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;\n ARA:13230040|36860700016|376014|82310400026|1800799024|22082099003|18002099003|56012099003;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:198.47.23.195; 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Ip=[198.47.23.195];\n Helo=[lewvzet201.ext.ti.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n CY4PEPF0000E9DB.namprd05.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DS0PR10MB997603", "X-BeenThere": "u-boot@lists.denx.de", "X-Mailman-Version": "2.1.39", "Precedence": "list", "List-Id": "U-Boot discussion <u-boot.lists.denx.de>", "List-Unsubscribe": "<https://lists.denx.de/options/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=unsubscribe>", "List-Archive": "<https://lists.denx.de/pipermail/u-boot/>", "List-Post": "<mailto:u-boot@lists.denx.de>", "List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>", "List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,\n <mailto:u-boot-request@lists.denx.de?subject=subscribe>", "Errors-To": "u-boot-bounces@lists.denx.de", "Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>", "X-Virus-Scanned": "clamav-milter 0.103.8 at phobos.denx.de", "X-Virus-Status": "Clean" }, "content": "Add a helper macro to write and verify a 32-bit value to a memory-mapped\nregister. This is essential for hardware errata workarounds that require\nconfirmation that register writes have taken effect before proceeding with\ninitialization.\n\nSigned-off-by: Udit Kumar <u-kumar1@ti.com>\n---\n arch/arm/mach-k3/include/mach/hardware.h | 10 ++++++++++\n 1 file changed, 10 insertions(+)", "diff": "diff --git a/arch/arm/mach-k3/include/mach/hardware.h b/arch/arm/mach-k3/include/mach/hardware.h\nindex 81b5f1fa45e..b337a71956f 100644\n--- a/arch/arm/mach-k3/include/mach/hardware.h\n+++ b/arch/arm/mach-k3/include/mach/hardware.h\n@@ -126,4 +126,14 @@ struct rom_extended_boot_data {\n \n u32 get_boot_device(void);\n const char *get_reset_reason(void);\n+\n+#define writel_verify(val, addr) \\\n+do { \\\n+\tu32 readback; \\\n+\twritel(val, addr); \\\n+\treadback = readl(addr); \\\n+\tif (readback != val) \\\n+\t\tprintf(\"writel_verify failed: addr=0x%p, expected=0x%x, got=0x%x\\n\", \\\n+\t\t (void *)(addr), (val), readback); \\\n+} while (0)\n #endif /* _ASM_ARCH_HARDWARE_H_ */\n", "prefixes": [ "v2", "1/3" ] }