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On devices where things are not fully describe in devicetree (1) and where the code thus falls back to calling cio2_bridge_init(), the i2c-clients for any VCMs also need to be instantiated manually. The VCM can be probed by its driver as soon as the code instantiates the i2c-client and this probing must not happen before the PMIC is fully setup. Make cio2_bridge_init() return -EPROBE_DEFER when the PMIC is not fully-setup, deferring the probe of the ipu3-cio2 driver. This is a preparation patch for adding VCM enumeration support to the ipu3-cio2-bridge code. 1) Through embedding of devicetree info in the ACPI tables Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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.