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