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12a7f71a8e
The RTC on the pmk8350 is not useful on all boards. Some boards may not provide backup power to the PMIC but might have another RTC on the board that does have backup power. In this case it's better to not use the RTC on the PMIC. At the moment, the only boards that includes this PMIC are sc7280-idp and sc7280-idp2. On sc7280-idp I'm not aware of any other RTCs, but sc7280-idp2 has a Chrome OS EC on it and this is intended to provide the RTC for the AP. Let's do what we normally do for hardware that's not used by all boards and set it to a default status of "disabled" and then enable it on the boards that need it. NOTE: for sc7280-idp it's _possible_ we might also want to add `allow-set-time;`. That could be the subject of a future patch if it is indeed true. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Satya Priya <skakit@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> [bjorn: Enable the RTC on the MTP as well] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20210929153553.1.Ib44c2ac967833d7a3f51452d44d15b7b8d23c1f0@changeid
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.