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GET /api/patches/2194194/?format=api
{ "id": 2194194, "url": "http://patchwork.ozlabs.org/api/patches/2194194/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260207095121.407468-1-padmarao.begari@amd.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": "<20260207095121.407468-1-padmarao.begari@amd.com>", "list_archive_url": null, "date": "2026-02-07T09:50:51", "name": "mtd: spi-nor: Add support for flash reset", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "86909b4fa25d675bc0fa31465ed738846126ac1b", "submitter": { "id": 89329, "url": "http://patchwork.ozlabs.org/api/people/89329/?format=api", "name": "Padmarao Begari", "email": "padmarao.begari@amd.com" }, "delegate": { "id": 17739, "url": "http://patchwork.ozlabs.org/api/users/17739/?format=api", "username": "jagan", "first_name": "Jagannadha Sutradharudu", "last_name": "Teki", "email": "jagannadh.teki@gmail.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260207095121.407468-1-padmarao.begari@amd.com/mbox/", "series": [ { "id": 491369, "url": "http://patchwork.ozlabs.org/api/series/491369/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=491369", "date": "2026-02-07T09:50:51", "name": "mtd: spi-nor: Add support for flash reset", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/491369/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194194/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194194/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=amd.com header.i=@amd.com header.a=rsa-sha256\n header.s=selector1 header.b=bLHB5sNa;\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=satlexmb08.amd.com; pr=C", "From": "Padmarao Begari <padmarao.begari@amd.com>", "To": "<u-boot@lists.denx.de>, <michal.simek@amd.com>", "CC": "Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>, Jagan Teki\n <jagan@amarulasolutions.com>, Vignesh R <vigneshr@ti.com>, Tudor Ambarus\n <tudor.ambarus@linaro.org>, Tom Rini <trini@konsulko.com>", "Subject": "[PATCH] mtd: spi-nor: Add support for flash reset", "Date": "Sat, 7 Feb 2026 15:20:51 +0530", "Message-ID": "<20260207095121.407468-1-padmarao.begari@amd.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "BN1PEPF00005FFC:EE_|BL1PR12MB5756:EE_", "X-MS-Office365-Filtering-Correlation-Id": "8e0d8d12-3568-4d97-9990-08de662e7c56", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;\n ARA:13230040|82310400026|1800799024|36860700013|376014;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:165.204.84.17; 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Ip=[165.204.84.17];\n Helo=[satlexmb08.amd.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n BN1PEPF00005FFC.namprd05.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BL1PR12MB5756", "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 support for spi-nor flash reset via GPIO controller\nby reading the reset-gpios property.\n\nSigned-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>\nSigned-off-by: Padmarao Begari <padmarao.begari@amd.com>\n---\n drivers/mtd/spi/spi-nor-core.c | 40 ++++++++++++++++++++++++++++++++++\n include/linux/mtd/spi-nor.h | 1 +\n 2 files changed, 41 insertions(+)", "diff": "diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c\nindex 76c33b24368..0c132a39190 100644\n--- a/drivers/mtd/spi/spi-nor-core.c\n+++ b/drivers/mtd/spi/spi-nor-core.c\n@@ -4466,6 +4466,40 @@ void spi_nor_set_fixups(struct spi_nor *nor)\n #endif /* SPI_FLASH_MACRONIX */\n }\n \n+static int spi_nor_hw_reset(struct spi_nor *nor)\n+{\n+#if CONFIG_IS_ENABLED(DM_GPIO)\n+\tstruct udevice *dev = nor->spi->dev;\n+\tint rc;\n+\n+\tnor->flash_gpio_reset = devm_gpiod_get_optional(dev, \"reset\",\n+\t\t\t\t\t\t\tGPIOD_IS_OUT |\n+\t\t\t\t\t\t\tGPIOD_ACTIVE_LOW);\n+\n+\tif (nor->flash_gpio_reset) {\n+\t\t/*\n+\t\t * Experimental delay values by looking at different flash device\n+\t\t * vendors datasheets.\n+\t\t */\n+\t\tudelay(5);\n+\n+\t\t/* Toggle gpio to reset the flash device. */\n+\t\trc = dm_gpio_set_value(nor->flash_gpio_reset, 1);\n+\t\tif (rc)\n+\t\t\treturn rc;\n+\n+\t\tudelay(150);\n+\n+\t\trc = dm_gpio_set_value(nor->flash_gpio_reset, 0);\n+\t\tif (rc)\n+\t\t\treturn rc;\n+\n+\t\tudelay(1200);\n+\t}\n+#endif\n+\treturn 0;\n+}\n+\n int spi_nor_scan(struct spi_nor *nor)\n {\n \tstruct spi_nor_flash_parameter params;\n@@ -4491,6 +4525,12 @@ int spi_nor_scan(struct spi_nor *nor)\n \n \tnor->setup = spi_nor_default_setup;\n \n+\tif (CONFIG_IS_ENABLED(DM_GPIO)) {\n+\t\tret = spi_nor_hw_reset(nor);\n+\t\tif (ret)\n+\t\t\treturn ret;\n+\t}\n+\n #ifdef CONFIG_SPI_FLASH_SOFT_RESET_ON_BOOT\n \t/*\n \t * When the flash is handed to us in a stateful mode like 8D-8D-8D, it\ndiff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h\nindex 4eef4ab0488..8017d0dd9db 100644\n--- a/include/linux/mtd/spi-nor.h\n+++ b/include/linux/mtd/spi-nor.h\n@@ -583,6 +583,7 @@ struct spi_nor {\n \tu8\t\t\tcmd_buf[SPI_NOR_MAX_CMD_SIZE];\n \tenum spi_nor_cmd_ext\tcmd_ext_type;\n \tstruct spi_nor_fixups\t*fixups;\n+\tstruct gpio_desc\t*flash_gpio_reset;\n \n \tint (*setup)(struct spi_nor *nor, const struct flash_info *info,\n \t\t const struct spi_nor_flash_parameter *params);\n", "prefixes": [] }