linaro-pm-wg team mailing list archive

[Amit Kucheria <1229658@xxxxxxxxxxxxxxxxxx>]

Can you check the output after some gpios are exported using

"echo XX > /sys/class/gpio/export"

where XX is the gpio number.

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https://bugs.launchpad.net/bugs/1229658

Title:
  Information is unavailable on "Gpio" page in powerdebug 0.7.1 with
  vexpress A9 Android.

Status in Linaro Android:
  New
Status in Powerdebug - a tool to help ARM developers:
  Triaged

Bug description:
  On ARM Versatile Express A9 board with Linaro Android image:

  https://android-build.linaro.org/builds/~linaro-android/vexpress-
  linaro-13.09-release/#build=6

  Information is unavailable on "Clocks" & "Gpio" after launched
  powerdebug version 0.7.1, error output shows as below:

  root@vexpress:/ # powerdebug
  failed to initialize clock details (check debugfs)
  error: unable to open directory /sys/class/gpio
  failed to initialize gpios
  root@vexpress:/ #

  Please refer to attachment to get snapshot pictures.

  Note:

  Please run powerdebug in ADB shell, which the output is well
  formatted, however the failure is same as run in serial console.

  Latest update for this bug is the behaviour shows as described in
  comment #9, only GPIO information is unavailable.

  For the bug on Samsung Arndale Android, please refer to:

  https://bugs.launchpad.net/linaro-powerdebug/+bug/1298171

  ###########################################
  This issue is observed on following images:
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-13.09-release/#build=6
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-13.11-release/#build=2
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-13.12-release/#build=1
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.01-release/#build=6
  ###########################################
  From build #247, only "Gpio" page is empty:
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro/#build=247
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.02-release/#build=11
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro/#build=271
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.03-release/#build=1
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro/#build=297
  https://android-build.linaro.org/builds/~linaro-android/vexpress-linaro-14.04-release/#build=1

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