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As of now, the flash parameters initialization logic is as following: a/ default flash parameters init in spi_nor_init_params() b/ manufacturer specific flash parameters updates, split across entire spi-nor core code c/ flash parameters updates based on SFDP tables d/ post BFPT flash parameter updates In the quest of removing the manufacturer specific code from the spi-nor core, we want to impose a timeline/priority on how the flash parameters are updated. The following sequence of calls is pursued: 1/ spi-nor core parameters init based on 'flash_info' struct: spi_nor_info_init_params() which can be overwritten by: 2/ MFR-based manufacturer flash parameters init: nor->manufacturer->fixups->default_init() which can be overwritten by: 3/ specific flash_info tweeks done when decisions can not be done just on MFR: nor->info->fixups->default_init() which can be overwritten by: 4/ SFDP tables flash parameters init - SFDP knows better: spi_nor_sfdp_init_params() which can be overwritten by: 5/ post SFDP tables flash parameters updates - in case manufacturers get the serial flash tables wrong or incomplete. nor->info->fixups->post_sfdp() The later can be extended to nor->manufacturer->fixups->post_sfdp() if needed. This patch opens doors for steps 2/ and 3/. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
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.