• Cyrille Pitchen's avatar
    mtd: st_spi_fsm: remove SPINOR_OP_RDSR2 and use SPINOR_OP_RDCR instead · 9447332f
    Cyrille Pitchen authored
    The 35h instruction op code has two aliases/macro definitions:
    - SPINOR_OP_RDCR from include/linux/mtd/spi-nor.h
    - SPINOR_OP_RDSR2 from drivers/mtd/devices/serial_flash_cmds.h
    
    Actually, some manufacturers name the associated internal register Status
    Register 2 whereas other manufacturers name it Configuration Register
    hence the two different macros for the very same instruction op code.
    
    Since the spi-nor.h file is the reference file for all SPI NOR instruction
    op codes, this patch removes the definition of the SPINOR_OP_RDSR2 macro.
    
    Also the SPINOR_OP_RDSR2 macro will be associated to another instruction
    op code in a further patch so we need to avoid a conflict defining this
    macro twice. Indeed the JESD216 rev B specification, defining the SFDP
    tables, also refers to the 3Eh and 3Fh instruction op codes to write/read
    the Status Register 2 on some SPI NOR flash memories, the 35h op code
    still being used to read the Configuration Register/Status Register 2 on
    other memories.
    Signed-off-by: default avatarCyrille Pitchen <cyrille.pitchen@microchip.com>
    Acked-by: default avatarMarek Vasut <marek.vasut@gmail.com>
    9447332f
st_spi_fsm.c 58 KB