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The i2c-controller on the Cherry Trail - Whiskey Cove PMIC is special in that it is always connected to the I2C charger IC of the board on which the PMIC is used; and the charger IC is not described in ACPI, so the i2c-cht-wc code needs to instantiate an i2c-client for it itself. So far this was hardcoded to instantiate an i2c-client for the bq24292i, with all properties, etc. set to match how this charger is used on the GPD win and GPD pocket devices. There is a rudimentary check to make sure the ACPI tables are at least somewhat as expected, but this is far from accurate, leading to a wrong i2c-client being instantiated for the charger on some boards. Switch to the new DMI based intel_cht_wc_get_model() helper which is exported by the MFD driver for the CHT Whiskey Cove PMIC to help PMIC cell drivers like the i2c-cht-wc code reliably detect which board they are running on. And add board_info for the charger ICs as found on the other 2 known boards with a Whisky Cove PMIC. This has been tested on all 3 known boards. Acked-by: Wolfram Sang <wsa@kernel.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.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
``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.