linux-kernel - [PATCH v2 1/3] mtd: spi-nor: macronix: Drop the redundant flash info fields

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Message-Id: <20250407075400.1113177-2-linchengming884@gmail.com>
Date: Mon,  7 Apr 2025 15:53:58 +0800
From: Cheng Ming Lin <linchengming884@...il.com>
To: tudor.ambarus@...aro.org,
	pratyush@...nel.org,
	mwalle@...nel.org,
	miquel.raynal@...tlin.com,
	richard@....at,
	vigneshr@...com,
	linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: alvinzhou@...c.com.tw,
	leoyu@...c.com.tw,
	Cheng Ming Lin <chengminglin@...c.com.tw>
Subject: [PATCH v2 1/3] mtd: spi-nor: macronix: Drop the redundant flash info fields

From: Cheng Ming Lin <chengminglin@...c.com.tw>

Many flash devices share the same ID but have different part numbers.
To avoid confusion, the part number field is removed.

Additionally, since SFDP already provides size information and
functionality covered by no_sfdp_flags, these fields are also removed.

Furthermore, when 4-byte address instruction table is available,
the SPI_NOR_4B_OPCODES flag is no longer needed and is removed.

Signed-off-by: Cheng Ming Lin <chengminglin@...c.com.tw>
Acked-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
 drivers/mtd/spi-nor/macronix.c | 36 +++++++++-------------------------
 1 file changed, 9 insertions(+), 27 deletions(-)

diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 4b09e5add630..2acd8e28d1c4 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -88,10 +88,8 @@ static const struct flash_info macronix_nor_parts[] = {
 		.name = "mx25l8005",
 		.size = SZ_1M,
 	}, {
+		/* MX25L1606E */
 		.id = SNOR_ID(0xc2, 0x20, 0x15),
-		.name = "mx25l1606e",
-		.size = SZ_2M,
-		.no_sfdp_flags = SECT_4K,
 	}, {
 		.id = SNOR_ID(0xc2, 0x20, 0x16),
 		.name = "mx25l3205d",
@@ -103,29 +101,21 @@ static const struct flash_info macronix_nor_parts[] = {
 		.size = SZ_8M,
 		.no_sfdp_flags = SECT_4K,
 	}, {
+		/* MX25L12805D */
 		.id = SNOR_ID(0xc2, 0x20, 0x18),
-		.name = "mx25l12805d",
-		.size = SZ_16M,
 		.flags = SPI_NOR_HAS_LOCK | SPI_NOR_4BIT_BP,
-		.no_sfdp_flags = SECT_4K,
 	}, {
+		/* MX25L25635E, MX25L25645G */
 		.id = SNOR_ID(0xc2, 0x20, 0x19),
-		.name = "mx25l25635e",
-		.size = SZ_32M,
-		.no_sfdp_flags = SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 		.fixups = &mx25l25635_fixups
 	}, {
+		/* MX66L51235F */
 		.id = SNOR_ID(0xc2, 0x20, 0x1a),
-		.name = "mx66l51235f",
-		.size = SZ_64M,
-		.no_sfdp_flags = SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 		.fixup_flags = SPI_NOR_4B_OPCODES,
 		.fixups = &macronix_qpp4b_fixups,
 	}, {
+		/* MX66L1G45G */
 		.id = SNOR_ID(0xc2, 0x20, 0x1b),
-		.name = "mx66l1g45g",
-		.size = SZ_128M,
-		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 		.fixups = &macronix_qpp4b_fixups,
 	}, {
 		/* MX66L2G45G */
@@ -167,11 +157,8 @@ static const struct flash_info macronix_nor_parts[] = {
 		.size = SZ_16M,
 		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 	}, {
+		/* MX25U51245G */
 		.id = SNOR_ID(0xc2, 0x25, 0x3a),
-		.name = "mx25u51245g",
-		.size = SZ_64M,
-		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
-		.fixup_flags = SPI_NOR_4B_OPCODES,
 		.fixups = &macronix_qpp4b_fixups,
 	}, {
 		.id = SNOR_ID(0xc2, 0x25, 0x3a),
@@ -185,11 +172,8 @@ static const struct flash_info macronix_nor_parts[] = {
 		.id = SNOR_ID(0xc2, 0x25, 0x3b),
 		.fixups = &macronix_qpp4b_fixups,
 	}, {
+		/* MX66U2G45G */
 		.id = SNOR_ID(0xc2, 0x25, 0x3c),
-		.name = "mx66u2g45g",
-		.size = SZ_256M,
-		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
-		.fixup_flags = SPI_NOR_4B_OPCODES,
 		.fixups = &macronix_qpp4b_fixups,
 	}, {
 		.id = SNOR_ID(0xc2, 0x26, 0x18),
@@ -215,15 +199,13 @@ static const struct flash_info macronix_nor_parts[] = {
 		.size = SZ_4M,
 		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 	}, {
+		/* MX25UW51245G */
 		.id = SNOR_ID(0xc2, 0x81, 0x3a),
-		.name = "mx25uw51245g",
 		.n_banks = 4,
 		.flags = SPI_NOR_RWW,
 	}, {
+		/* MX25L3255E */
 		.id = SNOR_ID(0xc2, 0x9e, 0x16),
-		.name = "mx25l3255e",
-		.size = SZ_4M,
-		.no_sfdp_flags = SECT_4K,
 	},
 	/*
 	 * This spares us of adding new flash entries for flashes that can be
-- 
2.25.1