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The compass uses oversampling to produce accurate values. MAX_ODR is functions of the repetitions setting. 80Hz is too high, calculate the frequency based on preset setting. Currently, we use 'SPECIAL' that was calculated for Ryu. BUG=b:68394559 BRANCH=eve,reef,poppy TEST=Check with ectool motionsense info 3 the frequency is around 30Hz. Before: Min Frequency: 781 mHz Max Frequency: 80000 mHz After: Min Frequency: 781 mHz Max Frequency: 29579 mHz Check with AIDA64 the compass is not stuck and return changing values. Fixup of CL/570482 Change-Id: Idcfed1418f59e755e5647d018351c6a7397ffe1b Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/742146 Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly