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| Filename | Latest commit message | Latest commit date |
|---|---|---|
101a68e74fThis converts the DaVinci SPI master driver to use GPIO descriptors for chip select handling. DaVinci parses the device tree a second time for the chip select GPIOs (no relying on the parsing already happening in the SPI core) and handles inversion semantics locally. We simply drop the extra parsing and set up and move the CS handling to the core and gpiolib. The fact that the driver is actively driving the GPIO in the davinci_spi_chipselect() callback is confusing since the host does not set SPI_MASTER_GPIO_SS so this should not ever get called when using GPIO CS. I put in a comment about this. This driver also supports instantiation from board files, but these are all using native chip selects so no problem with GPIO lines here. Cc: David Lechner <david@lechnology.com> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Linuxarm <linuxarm@huawei.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.
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.