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48ed887724
hwmon framework driver for Versatile Express sensors, providing information about board level voltage (only when regulator driver is not configured), currents, temperature and power/energy usage. Labels for the values can be defined as DT properties. Signed-off-by: Pawel Moll <pawel.moll@arm.com> Acked-by: Guenter Roeck <linux@roeck-us.net>
35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
Kernel driver vexpress
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======================
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Supported systems:
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* ARM Ltd. Versatile Express platform
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Prefix: 'vexpress'
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Datasheets:
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* "Hardware Description" sections of the Technical Reference Manuals
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for the Versatile Express boards:
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http://infocenter.arm.com/help/topic/com.arm.doc.subset.boards.express/index.html
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* Section "4.4.14. System Configuration registers" of the V2M-P1 TRM:
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http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0447-/index.html
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Author: Pawel Moll
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Description
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-----------
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Versatile Express platform (http://www.arm.com/versatileexpress/) is a
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reference & prototyping system for ARM Ltd. processors. It can be set up
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from a wide range of boards, each of them containing (apart of the main
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chip/FPGA) a number of microcontrollers responsible for platform
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configuration and control. Theses microcontrollers can also monitor the
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board and its environment by a number of internal and external sensors,
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providing information about power lines voltages and currents, board
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temperature and power usage. Some of them also calculate consumed energy
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and provide a cumulative use counter.
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The configuration devices are _not_ memory mapped and must be accessed
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via a custom interface, abstracted by the "vexpress_config" API.
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As these devices are non-discoverable, they must be described in a Device
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Tree passed to the kernel. Details of the DT binding for them can be found
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in Documentation/devicetree/bindings/hwmon/vexpress.txt.
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