[SOLVED] no adc after kernelupgrade 4.5 to 4.8.14

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[SOLVED] no adc after kernelupgrade 4.5 to 4.8.14

Postby eduardfaber » Sat Dec 10, 2016 10:34 pm

I did a systemupgrade (pacman -Syu) after quite a time. In this upgrade the kernel was updated as well.
After this my adc did not work anymore

$ dmesg gives:
Code: Select all
[    2.020000] iio iio:device0: Resolution used: 10 bits
[    2.030000] iio iio:device0: ADC Touch screen is disabled.
[    2.030000] Duplicate trigger name 'f804c000.adc-dev0-continuous'
[    2.040000] iio iio:device0: Could not allocate trigger 4
[    2.050000] at91_adc f804c000.adc: Couldn't setup the triggers.                                                                                                                                                                           
[    2.050000] at91_adc: probe of f804c000.adc failed with error -12
[    2.090000] wm8731 0-001b: Assuming static MCLK


and
Code: Select all
[root@weatherstation ~]# ll /sys/bus/iio/devices/
total 0

was not very helpfull. It's about a Arietta G25

Who can help?

Ed Faber
Last edited by eduardfaber on Thu Dec 22, 2016 8:55 pm, edited 1 time in total.
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Re: no adc after kernelupgrade 4.5 to 4.8.14

Postby kmihelich » Sun Dec 11, 2016 2:06 am

This will be fixed in 4.8.14-2.
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Re: no adc after kernelupgrade 4.5 to 4.8.14

Postby eduardfaber » Sun Dec 11, 2016 8:31 am

kmihelich,
the kernel is already available! Was it the kernel it self or the dtb-file?Is it possible to
show a snippet of the solution?
Anyway, the adc's are working again.

Thanks for the quick help!

Ed Faber
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Re: no adc after kernelupgrade 4.5 to 4.8.14

Postby moonman » Sun Dec 11, 2016 9:54 pm

Look up the package here and click view changes: https://archlinuxarm.org/packages
or look on our github https://github.com/archlinuxarm/PKGBUILDs
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Re: no adc after kernelupgrade 4.5 to 4.8.14

Postby kmihelich » Sun Dec 11, 2016 11:26 pm

This was a dts change. The other dts includes now specify the ADC triggers where they didn't in earlier versions, so there was a conflict.
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