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65673c6e33
The imx-mipi-csis driver sets the rate of the wrap clock to the value specified in the device tree's "clock-frequency" property, and defaults to 166 MHz otherwise. This is a historical mistake, as clock rate selection should have been left to the assigned-clock-rates property. Honouring the clock-frequency property can't be removed without breaking backwards compatibility, and the corresponding code isn't very intrusive. The 166 MHz default, on the other hand, prevents configuration of the clock rate through assigned-clock-rates, as the driver immediately overwrites the rate. This behaviour is confusing and has cost debugging time. There is little value in a 166 MHz default. All mainline device tree sources that enable the CSIS specify a clock-frequency explicitly, and the default wrap clock configuration on supported platforms is at least as high as 166 MHz. Drop the default, and only set the clock rate manually when the clock-frequency property is specified. Link: https://lore.kernel.org/r/20250822002734.23516-10-laurent.pinchart@ideasonboard.com Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org> |
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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 reStructuredText 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.