[Arm-dev] Different issues with "DTOVERLAY".

Hi Pablo,
Found the cause for the Help problem.
On CentOS, /boot/overlays/README is missing. It contains the help for all
the dtoverlay commands...

I got the file from its original distro, and I put it under
/boot/overlays/README.rasp for the demo:
  [pi at myrpi ~]$ dtoverlay -h i2c-gpio
  * Help file not found
  [pi at myrpi ~]$ sudo mv /boot/overlays/README.rasp /boot/overlays/README
  [pi at myrpi ~]$ dtoverlay -h i2c-gpio
  Name:   i2c-gpio

  Info:   Adds support for software i2c controller on gpio pins

  Usage:  dtoverlay=i2c-gpio,<param>=<val>

  Params: i2c_gpio_sda            GPIO used for I2C data (default "23")

          i2c_gpio_scl            GPIO used for I2C clock (default "24")

          i2c_gpio_delay_us       Clock delay in microseconds
                                 (default "2" = ~100kHz)

  [pi at myrpi ~]$

Unfortunatelly, the files under this folder seem to belong to no package...
  [pi at myrpi ~]$ rpm -qf /boot/overlays/i2c-gpio.dtbo
  file /boot/overlays/i2c-gpio.dtbo is not owned by any package
  [pi at myrpi ~]$

So, I'm stuck there, for now ...


Le lun. 24 sept. 2018 à 14:12, Stephan Guilloux <
stephan.guilloux at crisalid.com> a écrit :

>
>
> Le 24/09/2018 à 10:46, Pablo Sebastian Greco a écrit :
>
>
>
> El 24 sept 2018, a las 04:41, Stephan Guilloux <
> stephan.guilloux at crisalid.com> escribió:
>
>     Hello Pablo,
>
> Sorry for the direct mail.
>
> No problem. I'm on vacation this week so it is probably better
>
> Enjoy ;-)
>
>
> I'll have a look, this week, but I need the sources that CentOS delivers.
> I Tried to check on vault.centos.org, but no armhfp (only aarch64).
>
> You're right. I had touble finding it myself. It got lost when moving from
> the old to the new build system.
> Try here
> https://armv7.dev.centos.org/repodir/c7-extras-1/raspberrypi-vc/20170705-502.gitaa39775.el7.centos/
> I'll update the srpm and probably github when I'm back but if you find the
> problems, better.  Hehe
>
> OK. Got it there.
> Will inform you through the list, in case I find anything.
>
>
>
> Can you indicate where to find the current raspberrypi-vc-utils.src.rpm ?
>
>     Regards,
>
>         Stéphan.
>
> Thanks, Pablo
>
>
>
> Le 20/09/2018 à 13:02, Pablo Sebastián Greco a écrit :
>
> Stephan, sorry for the delay
> El 10/9/18 a las 12:28, Stephan Guilloux escribió:
>
> Hello,
>
> Small issues, today, with dtoverlay gpio-shutdown/poweroff
>
>     [root at mypi ~]# dtoverlay gpio-shutdown
>     su: user pi does not exist
>     * Failed to apply overlay '1_gpio-shutdown' (kernel)
>     su: user pi does not exist
>     [root at mypi ~]# dtoverlay gpio-poweroff
>     su: user pi does not exist
>     su: user pi does not exist
>     [root at mypi ~]#
>
> That seems to come from here (
> https://github.com/raspberrypi/userland/blob/master/host_applications/linux/apps/dtoverlay/dtoverlay-pre).
> If you run as root, it tries to run as the user "pi", as a normal
> user(any), you shouldn't have that problem
>
>
> Even if I add a fake user "PI", this does not work better.
>
>     [root at mypi ~]# useradd -r pi -p pi
>     [root at mypi ~]#
>     [root at mypi ~]#
>     [root at mypi ~]# dtoverlay gpio-poweroff
>     * Failed to apply overlay '2_gpio-poweroff' (kernel)
>     [root at mypi ~]# dtoverlay gpio-shutdown
>     * Failed to apply overlay '2_gpio-shutdown' (kernel)
>     [root at mypi ~]#
>
> That bit seems to come from here (
> https://github.com/raspberrypi/userland/blob/2448644657e5fbfd82299416d218396ee1115ece/host_applications/linux/apps/dtoverlay/dtoverlay_main.c#L982),
> it fails to check if the overlay was actually applied
>
>
> But when I check the overlay list, I get:
>
>     [root at mypi ~]# dtoverlay -l
>     Overlays (in load order):
>     0:  gpio-shutdown
>     1:  gpio-poweroff
>     [root at mypi ~]#
>
> At least, something is done :-)
>
> That is a little stranger, why does it say it did something when the
> command before said it failed???
>
> Last problems:
>     [root at mypi ~]# dtoverlay -h gpio-shutdown
>     * Help file not found
>     [root at mypi ~]# dtoverlay -h gpio-poweroff
>     * Help file not found
>     [root at mypi ~]# dtoverlay -h rpi-rtc
>     * Help file not found
>     [root at mypi ~]# dtoverlay -h rpi-display
>     * Help file not found
>     [root at mypi ~]#
>
>
>
> I guess I'll have to add some debugging info and check in my rpi (as time
> permits)
>
> In case ...
>     [root at mypi ~]# cat /proc/version
>     Linux version 4.14.65-v7.1.el7 (mockbuild at armhfp-03.bsys.centos.org)
> (gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC)) #1 SMP Mon Aug 20
> 19:04:20 UTC 2018
>     [root at mypi ~]#
>
>     [root at mypi ~]# rpm -qa 'raspberrypi-vc*'
>     raspberrypi-vc-demo-source-20170705-502.gitaa39775.el7.noarch
>     raspberrypi-vc-libs-20170705-502.gitaa39775.el7.armv7hl
>     raspberrypi-vc-utils-20170705-502.gitaa39775.el7.armv7hl
>     [root at mypi ~]#
>
> 2 questions
> 1) has it ever worked before?
> 2) which rpi exactly are you using? (don't know if it is really relevant).
>
> Thanks.
> Pablo.
>
>
> Stephan.
>
> P.S.: Today we built 4.14.71 and will be released as soon as it passes the
> tests.
>
>
>
>
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