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[2001:b400:e339:d3d2:5062:d98b:71d5:8271]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8517d22a341sm1718052b3a.36.2026.08.16.02.31.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Aug 2026 02:31:29 -0700 (PDT) From: Huasin Liao To: miquel.raynal@bootlin.com, vigneshr@ti.com Cc: richard@nod.at, tudor.ambarus@linaro.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, huasin.liao@airoha.com, Huasin Liao Subject: [PATCH] mtd: spinand: winbond: add support for W25N04LV Date: Sun, 16 Aug 2026 17:31:24 +0800 Message-Id: <20260816093124.12325-1-huasinliao@gmail.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260816_023132_071399_0194AD86 X-CRM114-Status: GOOD ( 10.12 ) 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 Add support for the Winbond W25N04LV. Tested on an Airoha AN7581-based board with the on-board W25N04LV, verified erase/read/write. Link: https://www.winbond.com/hq/product/code-storage-flash-memory/qspinand-flash/?__locale=en&partNo=W25N04LV Cc: huasin.liao@airoha.com Signed-off-by: Huasin Liao --- drivers/mtd/nand/spi/winbond.c | 38 ++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index 9b78c1e6cbc9..892220a12b22 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -345,6 +345,35 @@ static const struct mtd_ooblayout_ops w25n02kv_ooblayout = { .free = w25n02kv_ooblayout_free, }; +static int w25n04lv_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 7) + return -ERANGE; + + region->offset = 128 + (16 * section); + region->length = 13; + + return 0; +} + +static int w25n04lv_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section > 7) + return -ERANGE; + + region->offset = (16 * section) + 2; + region->length = 14; + + return 0; +} + +static const struct mtd_ooblayout_ops w25n04lv_ooblayout = { + .ecc = w25n04lv_ooblayout_ecc, + .free = w25n04lv_ooblayout_free, +}; + static int w25n01jw_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { @@ -759,6 +788,15 @@ static const struct spinand_info winbond_spinand_table[] = { &update_cache_variants), 0, SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)), + SPINAND_INFO("W25N04LV", /* 3.3V */ + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x8b, 0x23), + NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), + NAND_ECCREQ(8, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0, + SPINAND_ECCINFO(&w25n04lv_ooblayout, w25n02kv_ecc_get_status)), SPINAND_INFO("W25N04KW", /* 1.8V */ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xba, 0x23), NAND_MEMORG(1, 2048, 128, 64, 4096, 40, 1, 1, 1), -- 2.39.3 (Apple Git-146) ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/