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34bbdc12d0
Add the RTC hardware range parameters to enable the possibility of using the `start-year` devicetree property which, if present, will set the start_secs parameter by overriding the defaults that this driver is setting; To keep compatibility with (hence have the same date/time reading as) the old behavior, set: - range_min to 1900-01-01 00:00:00 - range_max to 2027-12-31 23:59:59 (HW year max range is 0-127) - start_secs defaulting to 1968-01-02 00:00:00 Please note that the oddness of starting from January 2nd is not a hardware quirk and it's done only to get the same date/time reading as an RTC which time was set before this commit. Also remove the RTC_MIN_YEAR_OFFSET addition and subtraction in callbacks set_time() and read_time() respectively, as now this is already done by the API. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com> Link: https://lore.kernel.org/r/20240923100010.97470-3-angelogioacchino.delregno@collabora.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
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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.