Messages in this thread | | | Date | Fri, 29 May 2020 15:33:46 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH 3/3] iio: magnetometer: ak8975: Add gpio reset support |
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Hi!
> AK09911 has a reset gpio to handle register's reset. If reset gpio is > set to low it will trigger the reset. AK09911 datasheed says that if not > used reset pin should be connected to VID and this patch emulates this > situation > > Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com> > --- > drivers/iio/magnetometer/ak8975.c | 21 +++++++++++++++++++-- > 1 file changed, 19 insertions(+), 2 deletions(-) > > /* > - * According to the datasheet the power supply rise time i 200us > + * According to the datasheet the power supply rise time is 200us > * and the minimum wait time before mode setting is 100us, in > - * total 300 us. Add some margin and say minimum 500us here. > + * total 300us. Add some margin and say minimum 500us here. > */ > usleep_range(500, 1000);
I'd assume that datasheet added some safety margin too, and there's another one in usleep... So I believe usleep..(300) should be okay..
Best regards, Pavel
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