Re: [PATCH] ACPI / PMIC: xpower: Do pinswitch magic when reading GPADC

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On Saturday, July 08, 2017 04:58:03 PM Andy Shevchenko wrote:
> On Sat, 2017-07-08 at 15:40 +0200, Hans de Goede wrote:
> > Testing has shown that the TS-pin's bias-current needs to be disabled
> > when reading the GPIO0 pin in GPADC mode.
> > 
> > It seems that there is only 1 bias current source and to be able to
> > use it
> > for the GPIO0 pin in GPADC mode it must be temporarily turned off for
> > the
> > TS pin, but the datasheet does not mention this.
> > 
> > This commit adds the necessary writes to turn the TS pin BIAS current
> > off before and back on after reading the GPADC. This fixes the GPADC
> > always returning a reading of 0.
> > 
> > 
> 
> > +	/* After switching to the GPADC pin give things some time to
> > settle */
> > +	usleep_range(6000, 10000);
> 
> msleep(6); ?
> 
> 

Is this the only issue you have with the $subject patch?

Thanks,
Rafael

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