{"id":2219645,"url":"http://patchwork.ozlabs.org/api/patches/2219645/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-mtd/patch/20260403-winbond-v6-18-rc1-spi-nor-swp-v4-23-833dab5e7288@bootlin.com/","project":{"id":3,"url":"http://patchwork.ozlabs.org/api/projects/3/?format=json","name":"Linux MTD development","link_name":"linux-mtd","list_id":"linux-mtd.lists.infradead.org","list_email":"linux-mtd@lists.infradead.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260403-winbond-v6-18-rc1-spi-nor-swp-v4-23-833dab5e7288@bootlin.com>","list_archive_url":null,"date":"2026-04-03T16:09:41","name":"[v4,23/27] mtd: spi-nor: winbond: Add W25H01NWxxAM CMP locking support","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"e6c643e284ff9cf48697bf1e09eb873818e7f281","submitter":{"id":73368,"url":"http://patchwork.ozlabs.org/api/people/73368/?format=json","name":"Miquel Raynal","email":"miquel.raynal@bootlin.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-mtd/patch/20260403-winbond-v6-18-rc1-spi-nor-swp-v4-23-833dab5e7288@bootlin.com/mbox/","series":[{"id":498652,"url":"http://patchwork.ozlabs.org/api/series/498652/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-mtd/list/?series=498652","date":"2026-04-03T16:09:18","name":"mtd: spi-nor: Enhance software protection","version":4,"mbox":"http://patchwork.ozlabs.org/series/498652/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219645/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219645/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=lists.infradead.org header.i=@lists.infradead.org\n header.a=rsa-sha256 header.s=bombadil.20210309 header.b=2yU7NTgu;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256\n header.s=casper.20170209 header.b=OV7HG/cv;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256\n header.s=dkim header.b=tbAxAZ/V;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=none (no SPF record) smtp.mailfrom=lists.infradead.org\n (client-ip=2607:7c80:54:3::133; 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a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=lists.infradead.org; s=bombadil.20210309; h=Sender:\n\tContent-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post:\n\tList-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id\n\t:MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description:\n\tResent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:\n\tList-Owner; bh=47ZXpCf7/2hKjAupRAaKLbgmB7lzZS9NGhuLUWtJJnQ=; b=2yU7NTguh6Q5aU\n\tPgF6NSLq7GjilI5n6dxkSIA4Lu79tdnqzdfKDt/9zVuX47rT1vc62gDDTyAA49IyGnx4pC7ar3T69\n\tpcG0gVFLVjG6FLlRO/WmgyslexcM/WyEe5cnqA9Of/Dvuf1E501WCUc/LiUxwE1TIiQsT5qbBhzmD\n\tmSLTgNXiFAJuxCMYsOFo8/6UnhizFS2+iLUjCHn868wdy2Zx47tf1j6s8Fi7cau6B5O5VYwa71eRc\n\txz3fAukh+JmeW3S2nN6RLifCOdkJRanWOYBFIMGqNhVLcSzfXz5T8lAZNtlesi2VaHz1lWFqZ7JaX\n\toONG3dp7NebZI8RDdrLQ==;","v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n\td=infradead.org; s=casper.20170209; h=Cc:To:In-Reply-To:References:Message-Id\n\t:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:From:Sender\n\t:Reply-To:Content-ID:Content-Description;\n\tbh=yhH+eLu6fxqdAQZiuioR7i/D/pMDWxpaQ3+CJS2/QWU=; 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See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.84.56 listed in\n bl.score.senderscore.com]\n 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The\n query to Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.84.56 listed in\n sa-trusted.bondedsender.org]\n 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to\n Validity was blocked. See\n https://knowledge.validity.com/hc/en-us/articles/20961730681243\n for more information.\n [185.246.84.56 listed in sa-accredit.habeas.com]\n -0.0 SPF_HELO_PASS SPF: HELO matches SPF record\n -0.0 SPF_PASS SPF: sender matches SPF record\n 0.1 DKIM_SIGNED Message has a DKIM or DK signature,\n not necessarily valid\n -0.1 DKIM_VALID Message has at least one valid DKIM or DK\n signature\n -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from\n envelope-from domain\n -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from\n author's\n domain\n -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n [score: 0.0000]","X-BeenThere":"linux-mtd@lists.infradead.org","X-Mailman-Version":"2.1.34","Precedence":"list","List-Id":"Linux MTD discussion mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Sender":"\"linux-mtd\" ","Errors-To":"linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org"},"content":"This chip has support for the locking complement (CMP) feature. Add\nthe relevant bit to enable it.\n\nSigned-off-by: Miquel Raynal \n---\nTest run with W25H01NWxxAM:\n$ flash_lock -u /dev/mtd0\n$ flash_lock -l /dev/mtd0 $bs $all_but_one # all but the first\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0000ffff | unlocked | 1\n 00010000-07ffffff | locked | 2047\n$ flash_lock -u /dev/mtd0 $bs 1 # all but the two first\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-0001ffff | unlocked | 2\n 00020000-07ffffff | locked | 2046\n$ flash_lock -u /dev/mtd0\n$ flash_lock -l /dev/mtd0 0 $all_but_one # same from the other side\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-07feffff | locked | 2047\n 07ff0000-07ffffff | unlocked | 1\n$ flash_lock -u /dev/mtd0 $(($size - (2 * $bs))) 1 # all but two\n$ show_sectors\nlocked sectors\n region (in hex) | status | #blocks\n ------------------+----------+--------\n 00000000-07fdffff | locked | 2046\n 07fe0000-07ffffff | unlocked | 2\n---\n drivers/mtd/spi-nor/winbond.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)","diff":"diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c\nindex 7609dcc768f0..1b9b0e9598ef 100644\n--- a/drivers/mtd/spi-nor/winbond.c\n+++ b/drivers/mtd/spi-nor/winbond.c\n@@ -363,7 +363,8 @@ static const struct flash_info winbond_nor_parts[] = {\n \t}, {\n \t\t/* W25H01NWxxAM */\n \t\t.id = SNOR_ID(0xef, 0xa0, 0x21),\n-\t\t.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP,\n+\t\t.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 |\n+\t\t\t SPI_NOR_4BIT_BP | SPI_NOR_HAS_CMP,\n \t}, {\n \t\t/* W25H02NWxxAM */\n \t\t.id = SNOR_ID(0xef, 0xa0, 0x22),\n","prefixes":["v4","23/27"]}