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For adaptive threshold events, the current value is compared with a (typically) low pass filtered version of the same signal that slowly tracks large scale changes. However, sometimes a step change can result in a large lag before the low pass filtered version begins to track the signal again. Timeouts can be used to made an instantaneous 'correction'. Documentation of this attribute is added in a later patch. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20210314181511.531414-11-jic23@kernel.org