Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
6a943386ee
Some timings like tBERS (block erase time), tCCs (change column setup time), tPROG (page program time) and tR (page read time) are derived from the ONFI parameter page. They are set in the SDR interface only if the chip is ONFI compliant. It makes these timings unreliable and prevent the driver to use one of these four values with a non-ONFI chip. Fix this situation by taking the highest possible value (or a default one) value for each missing timing (stored as unsigned 16-bit entries in the parameter page). This makes tBERS and tPROG being ~65ms while typical values are at most a few milliseconds. As these are timeouts, it is not impacting at all the performances in nominal use. tR maximum time and tCCS minimum time (delay to wait after a change column) are set, according to the ONFI specification, to default 'slow' values; respectively 200us and 500ns. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.