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1f4e29d24b
By default the phycore-som has support for two watchdog devices: 1st the internal imx6 watchdog and 2nd the DA9062 PMIC watchdog. According [1] the PMIC watchdog is used as boot watchdog. It is common to use this watchdog during "system up" time too. Furthermore the PMIC watchdog can be used to address ERR007117 since the phycore-som can be equipped with NAND or eMMC storage. The PMIC watchdog can be enabled/disabled by the PMIC itself if the PMIC enters POWERDOWN mode or by the host. The PMIC powerdown mode can't be used due to the PCB design. So the watchdog is still enabled during a suspend which causes a system reset. We need to tell the driver to disable the watchdog during a system suspend and to reenable it upon a resume to fix this. [1] https://git.pengutronix.de/cgit/barebox/tree/arch/arm/dts/imx6qdl-phytec-phycore-som.dtsi#n73 Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@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 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.