linux/Documentation/hwmon/vexpress
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   1Kernel driver vexpress
   2======================
   3
   4Supported systems:
   5  * ARM Ltd. Versatile Express platform
   6    Prefix: 'vexpress'
   7    Datasheets:
   8      * "Hardware Description" sections of the Technical Reference Manuals
   9        for the Versatile Express boards:
  10        http://infocenter.arm.com/help/topic/com.arm.doc.subset.boards.express/index.html
  11      * Section "4.4.14. System Configuration registers" of the V2M-P1 TRM:
  12        http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0447-/index.html
  13
  14Author: Pawel Moll
  15
  16Description
  17-----------
  18
  19Versatile Express platform (http://www.arm.com/versatileexpress/) is a
  20reference & prototyping system for ARM Ltd. processors. It can be set up
  21from a wide range of boards, each of them containing (apart of the main
  22chip/FPGA) a number of microcontrollers responsible for platform
  23configuration and control. Theses microcontrollers can also monitor the
  24board and its environment by a number of internal and external sensors,
  25providing information about power lines voltages and currents, board
  26temperature and power usage. Some of them also calculate consumed energy
  27and provide a cumulative use counter.
  28
  29The configuration devices are _not_ memory mapped and must be accessed
  30via a custom interface, abstracted by the "vexpress_config" API.
  31
  32As these devices are non-discoverable, they must be described in a Device
  33Tree passed to the kernel. Details of the DT binding for them can be found
  34in Documentation/devicetree/bindings/hwmon/vexpress.txt.
  35
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