{"id":2223552,"url":"http://patchwork.ozlabs.org/api/patches/2223552/?format=json","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=json","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=json","name":"Udit Kumar","email":"u-kumar1@ti.com"},"delegate":{"id":3651,"url":"http://patchwork.ozlabs.org/api/users/3651/?format=json","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=json","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":"","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 ","To":", , ","CC":", , , ,\n , Udit Kumar ","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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","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 \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"]}