Message ID | 20240718034614.484018-5-alvinzhou.tw@gmail.com |
---|---|
State | New |
Headers | show
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[211.75.127.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fc62e57d6csm1770455ad.43.2024.07.17.20.47.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jul 2024 20:47:47 -0700 (PDT) Received: from hqs-appsw-a2o.mp600.macronix.com (linux-patcher [172.17.236.67]) by twhmp6px (Postfix) with ESMTPS id 53C0F800D3; Thu, 18 Jul 2024 11:56:58 +0800 (CST) From: AlvinZhou <alvinzhou.tw@gmail.com> To: linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, tudor.ambarus@linaro.org, pratyush@kernel.org, mwalle@kernel.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, broonie@kernel.org Cc: chengminglin@mxic.com.tw, leoyu@mxic.com.tw, AlvinZhou <alvinzhou@mxic.com.tw>, JaimeLiao <jaimeliao@mxic.com.tw> Subject: [PATCH v9 4/6] mtd: spi-nor: sfdp: Get the 8D-8D-8D byte order from BFPT Date: Thu, 18 Jul 2024 11:46:12 +0800 Message-Id: <20240718034614.484018-5-alvinzhou.tw@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240718034614.484018-1-alvinzhou.tw@gmail.com> References: <20240718034614.484018-1-alvinzhou.tw@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240717_204748_734669_8CF2E368 X-CRM114-Status: GOOD ( 13.62 ) X-Spam-Score: -2.1 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From: AlvinZhou From: Tudor Ambarus Parse BFPT in order to retrieve the byte order in 8D-8D-8D mode. 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Add octal DTR support for Macronix flash
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expand
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diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c index 5b1117265bd2..21727f9a4ac6 100644 --- a/drivers/mtd/spi-nor/sfdp.c +++ b/drivers/mtd/spi-nor/sfdp.c @@ -671,6 +671,10 @@ static int spi_nor_parse_bfpt(struct spi_nor *nor, return -EOPNOTSUPP; } + /* Byte order in 8D-8D-8D mode */ + if (bfpt.dwords[SFDP_DWORD(18)] & BFPT_DWORD18_BYTE_ORDER_SWAPPED) + nor->flags |= SNOR_F_SWAP16; + return spi_nor_post_bfpt_fixups(nor, bfpt_header, &bfpt); } diff --git a/drivers/mtd/spi-nor/sfdp.h b/drivers/mtd/spi-nor/sfdp.h index da0fe5aa9bb0..d90cbd7331f7 100644 --- a/drivers/mtd/spi-nor/sfdp.h +++ b/drivers/mtd/spi-nor/sfdp.h @@ -130,6 +130,7 @@ struct sfdp_bfpt { #define BFPT_DWORD18_CMD_EXT_INV (0x1UL << 29) /* Invert */ #define BFPT_DWORD18_CMD_EXT_RES (0x2UL << 29) /* Reserved */ #define BFPT_DWORD18_CMD_EXT_16B (0x3UL << 29) /* 16-bit opcode */ +#define BFPT_DWORD18_BYTE_ORDER_SWAPPED BIT(31) /* Byte sawp of 16-bit in 8D-8D-8D mode */ struct sfdp_parameter_header { u8 id_lsb;