mtd: spinand: micron: Add support for MT29F2G01AAAED (8c573d94) · Commits · 戴 / test

drivers/mtd/nand/spi/micron.c

+64 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,19 @@ static SPINAND_OP_VARIANTS(x4_update_cache_variants,
		SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
		SPINAND_PROG_LOAD(false, 0, NULL, 0));

		/* Micron MT29F2G01AAAED Device */
		static SPINAND_OP_VARIANTS(x4_read_cache_variants,
		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
		SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));

		static SPINAND_OP_VARIANTS(x1_write_cache_variants,
		SPINAND_PROG_LOAD(true, 0, NULL, 0));

		static SPINAND_OP_VARIANTS(x1_update_cache_variants,
		SPINAND_PROG_LOAD(false, 0, NULL, 0));

		static int micron_8_ooblayout_ecc(struct mtd_info *mtd, int section,
		struct mtd_oob_region *region)
		{
		@@ -74,6 +87,47 @@ static const struct mtd_ooblayout_ops micron_8_ooblayout = {
		.free = micron_8_ooblayout_free,
		};

		static int micron_4_ooblayout_ecc(struct mtd_info *mtd, int section,
		struct mtd_oob_region *region)
		{
		struct spinand_device *spinand = mtd_to_spinand(mtd);

		if (section >= spinand->base.memorg.pagesize /
		mtd->ecc_step_size)
		return -ERANGE;

		region->offset = (section * 16) + 8;
		region->length = 8;

		return 0;
		}

		static int micron_4_ooblayout_free(struct mtd_info *mtd, int section,
		struct mtd_oob_region *region)
		{
		struct spinand_device *spinand = mtd_to_spinand(mtd);

		if (section >= spinand->base.memorg.pagesize /
		mtd->ecc_step_size)
		return -ERANGE;

		if (section) {
		region->offset = 16 * section;
		region->length = 8;
		} else {
		/* section 0 has two bytes reserved for the BBM */
		region->offset = 2;
		region->length = 6;
		}

		return 0;
		}

		static const struct mtd_ooblayout_ops micron_4_ooblayout = {
		.ecc = micron_4_ooblayout_ecc,
		.free = micron_4_ooblayout_free,
		};

		static int micron_select_target(struct spinand_device *spinand,
		unsigned int target)
		{
		@@ -217,6 +271,16 @@ static const struct spinand_info micron_spinand_table[] = {
		SPINAND_ECCINFO(&micron_8_ooblayout,
		micron_8_ecc_get_status),
		SPINAND_SELECT_TARGET(micron_select_target)),
		/* M69A 2Gb 3.3V */
		SPINAND_INFO("MT29F2G01AAAED",
		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9F),
		NAND_MEMORG(1, 2048, 64, 64, 2048, 80, 2, 1, 1),
		NAND_ECCREQ(4, 512),
		SPINAND_INFO_OP_VARIANTS(&x4_read_cache_variants,
		&x1_write_cache_variants,
		&x1_update_cache_variants),
		0,
		SPINAND_ECCINFO(&micron_4_ooblayout, NULL)),
		};

		static int micron_spinand_init(struct spinand_device *spinand)

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