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If there is no wired ready/busy pin, classic way to wait for command completion is to use function 'nand_soft_waitrdy()'. Meson NAND has special command which allows to wait for NAND_STATUS_READY bit without reading status in a software loop (as 'nand_soft_waitrdy()' does). To use it send this command along with NAND_CMD_STATUS, then wait for an interrupt, and after interrupt send NAND_CMD_READ0. So this feature allows to use interrupt driven waiting without wired ready/busy pin. Suggested-by: Liang Yang <liang.yang@amlogic.com> Signed-off-by: Arseniy Krasnov <AVKrasnov@sberdevices.ru> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230608044728.1328506-3-AVKrasnov@sberdevices.ru
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.