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Tudor Ambarus 4e53ab0c29
mtd: spi-nor: Set the 4-Byte Address Mode method based on SFDP data
JESD216 SFDP defines in BFPT methods to enter and exit the
4-Byte Address Mode. The flash parameters and settings that are
retrieved from SFDP have higher precedence than the static
initialized ones, because they should be more accurate and less
error prone than those initialized statically. Parse and favor the
BFPT-parsed set_4byte_addr_mode methods.

Some regressions may be introduced by this patch, because the
params->set_4byte_addr_mode method that was set either in
spi_nor_init_default_params() or later overwritten in default_init()
hooks, are now be overwritten with a different value based on the
BFPT data. If that's the case, the fix is to introduce a post_bfpt
fixup hook where one should fix the wrong BFPT info.

Link: https://lore.kernel.org/r/20230331074606.3559258-7-tudor.ambarus@linaro.org
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
History 2023-04-04 09:43:50 +03:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.