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Mon, 20 Apr 2026 02:03:31 -0700 (PDT) Received: from 7c1ef1825668 ([115.245.213.202]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b5faa1739fsm98861015ad.22.2026.04.20.02.03.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2026 02:03:30 -0700 (PDT) From: Sanjaikumar V S To: pratyush@kernel.org Cc: hd@os-cillation.de, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, mwalle@kernel.org, richard@nod.at, sanjaikumar.vs@dicortech.com, sanjaikumarvs@gmail.com, stable@vger.kernel.org, tudor.ambarus@linaro.org, vigneshr@ti.com Subject: Re: [PATCH v5] mtd: spi-nor: Fix SST AAI write mode opcode handling Date: Mon, 20 Apr 2026 09:02:37 +0000 Message-ID: <20260420090237.21-1-sanjaikumarvs@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <40364d66-f8a2-4efb-a4d3-70f0aa3137e2@os-cillation.de> References: <40364d66-f8a2-4efb-a4d3-70f0aa3137e2@os-cillation.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260420_020332_450003_184528DC X-CRM114-Status: UNSURE ( 6.28 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Hi Pratyush, In v4 you suggested updating dirmap_info with the right opcodes. I went with a different approach in v5 -- disabling dirmap for SST AAI devices in sst_nor_late_init() instead. The reasoning is that updating dirmap_info at runtime is problematic since AAI requires dynamic opcode and address byte changes per write, and controllers may cache the template at dirmap_create time. Hendrik has tested this approach on his SST25VF032B. Does this approach work for you, or would you prefer a different direction? Thanks, Sanjaikumar ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/