326e235755
Inertial sensor data collection and processing can be controlled by configuring one of the DIOx lines as an external clock input. This option is available for all devices supported by this driver. However, only adis1649x devices support different modes for the external clock. Sync mode is supported by all devices. In this mode, the output data rate is equal with the clock frequency divided by DEC_RATE + 1. This mode of calculation is similar with the case when the internal clock is used. Pulse Per Second (PPS) Mode, is only supported by adis1649x devices. In this mode, the output data rate is equal to the product of the external clock frequency and the scale factor in the SYNC_SCALE register. This patch uses the "clock-names" property to enable the external clock in one of the two supported modes: "sync" or "pps". This property is optional. If it is not specified, the internal clock is used. This patch also offers the option to select the DIOx line to be used as an external clock input via the custom "adi,ext-clk-pin" property. If this field is left empty, DIO2 is assigned as default external clock input pin. Each DIOx pin supports only one function at a time (data ready line selection or external clock input). Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.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.