Hi,
On 08-07-17 15:58, 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); ?
That will make checkpatch unhappy and may sleep for as long as 20ms, also see:
Documentation/timers/timers-howto.txt which advices against using msleep for
short sleeps.
Regards,
Hans
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