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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-141019b41d9sm3833652c88.5.2026.08.06.23.43.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2026 23:43:47 -0700 (PDT) From: Md Sadre Alam To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, tudor.ambarus@linaro.org, s-k6@ti.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Cc: varadarajan.narayanan@oss.qualcomm.com Subject: [PATCH 1/2] mtd: spinand: winbond: add support for W25N04LW Date: Fri, 7 Aug 2026 12:13:38 +0530 Message-Id: <20260807064339.1632249-2-md.alam@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260807064339.1632249-1-md.alam@oss.qualcomm.com> References: <20260807064339.1632249-1-md.alam@oss.qualcomm.com> MIME-Version: 1.0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA3MDA0OCBTYWx0ZWRfX9MqTx8BViwyC 66oeRMRh+n2+FTH9ty9VltR/I2YUBX20Jr9L3nIQhPPccyNqLzVuMOCOnp5yKUi0rI8CXzMn3lw cDOQLgsbgZ0vZiL6p0L4kviuiYW5swec6YK6Ist7sIyODFIeWRFId5KNyYEwIDq/RtPNugVpu/v HEtfdIGiGZz2LzmBFEmaBty/Dp+Ycyymg5SCli/iIAGz2RbS/jAttZyAivRD416u0+yF1dMt0lm X5YCEZUvtbWDZEJbcJVDl7JxLjdrlYUGIxX/L6wTb946KZyUxJOyR2Wkcm6aAMKFWsRPgz4Y7K9 7ROYc/DPntY/0mVuTBRAEBN+2vxn/SwNrOXtVN3h04T5WDw1xEOb72KzxJJ3lnfvEobJLQ9Ho4T 84oNqXR4uY/5vbjsUSJXDFtIXT4IRLul22dzkLIlLNaxWEOysRMPpvUd/UhrPlGX5/vFD9Ipf5B E8Sj3hbqO36g3q3u2AQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwODA3MDA0OCBTYWx0ZWRfX0bzj277dckbk yhHsSeZvAU3Z1SpDLjc4xAszKJv8n45uV/rfypBf+GUU/5mQbLHVrfi/Q9juRDi2FXhWnuGhEYo YxrkzjLq14gqxzCESgdGslB7DypONd8= X-Proofpoint-ORIG-GUID: 6ptC9Vt0uCuYXYddw6oHwNzA4PpmR3t6 X-Proofpoint-GUID: 6ptC9Vt0uCuYXYddw6oHwNzA4PpmR3t6 X-Authority-Analysis: v=2.4 cv=e5Y2j6p/ c=1 sm=1 tr=0 ts=6a757ea5 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=WBRZZNzXIX_3tYRKepwA:9 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-07_01,2026-08-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608070048 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260806_234349_858615_5446D502 X-CRM114-Status: GOOD ( 13.73 ) 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 Winbond W25N04LW 4Gbit SPI-NAND. It has 8-bit on-die ECC and a 4096+256 byte page (4096 byte main area, 128 byte usable OOB once on-chip ECC hides the 128 byte parity area), organized as 2048 blocks of 64 pages each, unlike the existing 2048 byte page W25N04KV/W25N04KW parts. Signed-off-by: Md Sadre Alam --- drivers/mtd/nand/spi/winbond.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c index 9b78c1e6cbc9..b0147b7cb76f 100644 --- a/drivers/mtd/nand/spi/winbond.c +++ b/drivers/mtd/nand/spi/winbond.c @@ -345,6 +345,29 @@ static const struct mtd_ooblayout_ops w25n02kv_ooblayout = { .free = w25n02kv_ooblayout_free, }; +static int w25n04lw_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + return -ERANGE; +} + +static int w25n04lw_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *region) +{ + if (section) + return -ERANGE; + + region->offset = 2; + region->length = mtd->oobsize - 2; + + return 0; +} + +static const struct mtd_ooblayout_ops w25n04lw_ooblayout = { + .ecc = w25n04lw_ooblayout_ecc, + .free = w25n04lw_ooblayout_free, +}; + static int w25n01jw_ooblayout_ecc(struct mtd_info *mtd, int section, struct mtd_oob_region *region) { @@ -768,6 +791,15 @@ static const struct spinand_info winbond_spinand_table[] = { &update_cache_variants), 0, SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)), + SPINAND_INFO("W25N04LW", /* 1.8V */ + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb2, 0x23), + NAND_MEMORG(1, 4096, 128, 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(&w25n04lw_ooblayout, w25n02kv_ecc_get_status)), SPINAND_INFO("W35N04JW", /* 1.8V */ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xdf, 0x23), NAND_MEMORG(1, 4096, 128, 64, 512, 10, 1, 4, 1), -- 2.34.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/