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Currently, it is valid to specify both "nand-ecc-step-size" and "nand-ecc-strength", but not allowed to set only one of them. This requirement has a conflict with "nand-ecc-maximize"; this flag is used when you want the driver to choose the best ECC strength. If "nand-ecc-maximize" is set, "nand-ecc-strength" is very likely to be unset. It would be possible to make the if-conditional more complex by adding the check for the NAND_ECC_MAXIMIZE flag, but I chose to drop the check entirely. I thought of the situation where the hardware has a fixed ECC step size (so it can be hard-coded in the driver), whereas the ECC strength is configurable by software. In that case, we may want to only set "nand-ecc-strength" (or "nand-ecc-maximize") in DT. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.