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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=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by DM6NAM11FT053.mail.protection.outlook.com (10.13.173.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6500.27 via Frontend Transport; Thu, 15 Jun 2023 11:16:56 +0000 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Thu, 15 Jun 2023 06:16:55 -0500 Received: from xhdakumarma40u.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.23 via Frontend Transport; Thu, 15 Jun 2023 06:16:51 -0500 From: Amit Kumar Mahapatra To: , , , , , , , CC: , , , , , , Amit Kumar Mahapatra Subject: [PATCH 0/2] mtd: spi-nor: Avoid setting SRWD bit in SR Date: Thu, 15 Jun 2023 16:46:47 +0530 Message-ID: <20230615111649.36344-1-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT053:EE_|SA1PR12MB6728:EE_ X-MS-Office365-Filtering-Correlation-Id: a37b04c4-82e7-4c8a-415a-08db6d9207b9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jun 2023 11:16:56.4510 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a37b04c4-82e7-4c8a-415a-08db6d9207b9 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT053.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB6728 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Setting the status register write disable (SRWD) bit in the status register (SR) with WP signal of the flash not connected will configure the SR permanently as read-only. To avoid this a boolean type DT property "broken-wp" is introduced. If this property is defined, the spi-nor doesn't set the SRWD bit in SR while performing flash protection operation. --- BRANCH: for-next --- Amit Kumar Mahapatra (2): dt-bindings: mtd: jedec, spi-nor: Add DT property to avoid setting SRWD bit in status register mtd: spi-nor: Avoid setting SRWD bit in SR if WP signal not connected .../devicetree/bindings/mtd/jedec,spi-nor.yaml | 13 +++++++++++++ drivers/mtd/spi-nor/core.c | 3 +++ drivers/mtd/spi-nor/core.h | 1 + drivers/mtd/spi-nor/swp.c | 5 +++-- 4 files changed, 20 insertions(+), 2 deletions(-) -- 2.17.1