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1Kernel driver vexpress2======================3 4Supported systems:5 6 * ARM Ltd. Versatile Express platform7 8 Prefix: 'vexpress'9 10 Datasheets:11 12 * "Hardware Description" sections of the Technical Reference Manuals13 for the Versatile Express boards:14 15 - http://infocenter.arm.com/help/topic/com.arm.doc.subset.boards.express/index.html16 17 * Section "4.4.14. System Configuration registers" of the V2M-P1 TRM:18 19 - http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0447-/index.html20 21Author: Pawel Moll22 23Description24-----------25 26Versatile Express platform (http://www.arm.com/versatileexpress/) is a27reference & prototyping system for ARM Ltd. processors. It can be set up28from a wide range of boards, each of them containing (apart of the main29chip/FPGA) a number of microcontrollers responsible for platform30configuration and control. These microcontrollers can also monitor the31board and its environment by a number of internal and external sensors,32providing information about power lines voltages and currents, board33temperature and power usage. Some of them also calculate consumed energy34and provide a cumulative use counter.35 36The configuration devices are _not_ memory mapped and must be accessed37via a custom interface, abstracted by the "vexpress_config" API.38 39As these devices are non-discoverable, they must be described in a Device40Tree passed to the kernel. Details of the DT binding for them can be found41in Documentation/devicetree/bindings/hwmon/vexpress.txt.42