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This flash is having uniform sector erase size of 128KB, have support of FSR(flag status register), flash size is 64MB and supports 4-byte commands. Some MICRON related macros in spi-nor domain were ST, actually. Added REAL micron defination in header/source files. This flash supports single bit and octal bit mode cmds. Signed-off-by: Yogesh Gaur --- drivers/mtd/spi-nor/spi-nor.c | 7 ++++++- include/linux/mtd/cfi.h | 1 + include/linux/mtd/spi-nor.h | 1 + 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index d445a4d..a54731b 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -272,6 +272,7 @@ static inline int set_4byte(struct spi_nor *nor, const struct flash_info *info, switch (JEDEC_MFR(info)) { case SNOR_MFR_MICRON: + case SNOR_MFR_MICRONO: /* Some Micron need WREN command; all will accept it */ need_wren = true; case SNOR_MFR_MACRONIX: @@ -1091,6 +1092,9 @@ static int spi_nor_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len) { "n25q00", INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) }, { "n25q00a", INFO(0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ | NO_CHIP_ERASE) }, + /* Micron Flashes with MFR ID as 0x2c */ + { "mt35xu512aba", INFO(0x2c5b1a, 0, 128 * 1024, 512, SECT_4K | USE_FSR | SPI_NOR_4B_OPCODES) }, + /* PMC */ { "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) }, { "pm25lv010", INFO(0, 0, 32 * 1024, 4, SECT_4K_PMC) }, @@ -2473,6 +2477,7 @@ static int spi_nor_init_params(struct spi_nor *nor, break; case SNOR_MFR_MICRON: + case SNOR_MFR_MICRONO: break; default: @@ -2835,7 +2840,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, mtd->_resume = spi_nor_resume; /* NOR protection support for STmicro/Micron chips and similar */ - if (JEDEC_MFR(info) == SNOR_MFR_MICRON || + if (JEDEC_MFR(info) == SNOR_MFR_MICRON || SNOR_MFR_MICRONO || info->flags & SPI_NOR_HAS_LOCK) { nor->flash_lock = stm_lock; nor->flash_unlock = stm_unlock; diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h index 9b57a9b..cbf7716 100644 --- a/include/linux/mtd/cfi.h +++ b/include/linux/mtd/cfi.h @@ -377,6 +377,7 @@ struct cfi_fixup { #define CFI_MFR_SHARP 0x00B0 #define CFI_MFR_SST 0x00BF #define CFI_MFR_ST 0x0020 /* STMicroelectronics */ +#define CFI_MFR_MICRON 0x002C /* Micron */ #define CFI_MFR_TOSHIBA 0x0098 #define CFI_MFR_WINBOND 0x00DA diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index de36969..5589c15 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -24,6 +24,7 @@ #define SNOR_MFR_GIGADEVICE 0xc8 #define SNOR_MFR_INTEL CFI_MFR_INTEL #define SNOR_MFR_MICRON CFI_MFR_ST /* ST Micro <--> Micron */ +#define SNOR_MFR_MICRONO CFI_MFR_MICRON /* Original Micron */ #define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX #define SNOR_MFR_SPANSION CFI_MFR_AMD #define SNOR_MFR_SST CFI_MFR_SST