[PATCH v2 1/3] mtd: m25p80: utilize dedicated 4-byte addressing commands

Artem Bityutskiy dedekind1 at gmail.com
Fri May 10 11:33:13 EDT 2013


On Thu, 2013-04-11 at 01:34 -0700, Brian Norris wrote:
> Traditionally, the command set used by SPI flash only supported a 3-byte
> address. However, large SPI flash (>= 32MB, or 256Mbit) require 4 bytes
> to address the entire flash. Most manufacturers have supplied a mode
> switch (via a "bank register writer", or a "enable 4-byte mode"
> command), which tells the flash to expect 4 address cycles from now on,
> instead of 3. This mode remains until power is cut, the reset line is
> triggered (on packages where present), or a command is sent to reset the
> flash or to reset the 3-byte addressing mode.

Pushed this patch-set to l2-mtd.git tree, thanks!

-- 
Best Regards,
Artem Bityutskiy




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