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The nor->addr_width tracks number of address bytes used in read/program/erase ops and eventually set to 4 for >16MB chips, regardless of flash's internal address mode. For Infineon SEMPER flash's, we use Read/Write Any Register commands for configuration and status check. These commands take 3- or 4-byte address depending on flash's internal address mode. Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>