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0c0ead7623
The MediaTek PWM IP can sometimes use the 26 MHz source clock to generate the PWM signal, but the driver currently assumes that we always use the PWM bus clock to generate the PWM signal. This commit modifies the PWM driver in order to force the PWM IP to always use the bus clock as source clock. I do not have the datasheet of all the MediaTek SoC, so I don't know if the register to choose the source clock is present in all the SoCs or only in subset. As a consequence I made this change optional by using a platform data paremeter to says whether this register is supported or not. On all the SoCs I don't have the datasheet (MT2712, MT7622, MT7623, MT7628, MT7629) I kept the behavior to be the same as before this change. Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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
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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.