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iio: magn: ak8975: allow a delay after enabling regulators
The datasheet actually specifies that we need to wait atleast 500us after powering on the device before trying to set mode. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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@ -399,6 +399,12 @@ static int ak8975_power_on(const struct ak8975_data *data)
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"Failed to enable specified Vid supply\n");
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return ret;
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}
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/*
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* According to the datasheet the power supply rise time i 200us
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* and the minimum wait time before mode setting is 100us, in
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* total 300 us. Add some margin and say minimum 500us here.
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*/
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usleep_range(500, 1000);
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return 0;
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}
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