[ Upstream commit 869f2c94db92f0f1d6acd0dff1c1ebb8160f5e29 ] The spi which's version is higher than ver 2 will automatically enable this feature. If the length of master transmission is uncertain, the RK spi slave is better to automatically stop after cs inactive instead of waiting for xfer_completion forever. Signed-off-by: Jon Lin <jon.lin@rock-chips.com> Link: https://lore.kernel.org/r/20220216014028.8123-4-jon.lin@rock-chips.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.
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