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→Axel Embedded Linux Kit
==Software thermal protection==
===Axel Embedded Linux Kit(XELK)===Two In [[Axel_Embedded_Linux_Kit_(XELK)|XELK]], two software thermal protection mechanisms are implemented. Both are based on the processor's temperature sensor. Being the product based on industrial version of iMX6, its It is worth remembering that maximum junction temperature (also denoted as Tj in the rest of the document) is 105°C. At U-Boot level, automatic boot procedure is halted until Tj is smaller than (following temperatures might seem excessively low but they take into account the intrinsic poor precision of the temperature sensor to provide a reasonable safe margin).*90°C for industrial grade processors*?°C for grade processorsand extended comm.
At U-Boot level, automatic boot procedure is halted until Tj is smaller than (following temperatures might seem excessively low but they take into account the intrinsic poor precision of the temperature sensor to provide a reasonable safe margin):
*80°C for commercial parts
*90 for extended commercial and industrial parts
*110°C for automotive parts.
At Linux level, a more sophisticated protection mechanism - that can be accessed via <code>sysfs</code> - is implemented. For more details about this functionality, please refer to <code>Documentation/thermal/sysfs-api.txt</code> in the kernel sources.
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For more details about SoC frequency management, see also [[FAQs_(Axel)|this page]].
