[Librem-5-dev] queries with dev kit environment set up

Dan Kortschak dan at kortschak.io
Tue May 28 19:06:29 PDT 2019


Thanks. Since the board was fresh out of the box due to a later deliver
as stated above I had assumed that I would be working from a common
starting point and could just follow the provided documentation.

It's unclear to me from the outset exactly what information would be
useful, so this is why I asked for suggestions about how to debug it.

$ uname -a
Linux pureos 4.18.11-g418cc45f #1 SMP PREEMPT Wed May 22 06:24:21 PDT
2019 aarch64 GNU/Linux


* HDMI

$ cat /sys/firmware/devicetree/base/hdmi at 32c00000/status
disabled

but the link from /boot/dtb looks like it is pointing at the right
thing

$ ls -l /boot/dtb
lrwxrwxrwx 1 root root 40 May 24 21:59 /boot/dtb -> dtbs/4.18.11-
g418cc45f/./librem5-evk.dtb

which exists

$ ls -l dtbs/4.18.11-g418cc45f/./librem5-evk.dtb
-rw-r--r-- 1 root root 42276 May 24 21:59 dtbs/4.18.11-
g418cc45f/./librem5-evk.dtb


* WIFI

No, I did not remove the blacklist line as I didn't realise it was
blacklisted. I have now and that resolves that issue. I will send an MR
to add that instruction or at least note that it is blacklisted.



If the documentation that's at the set up guide page is not correct, is
there documentation that I can follow that is?


cheers
Dan


On Tue, 2019-05-28 at 13:14 +0200, Guido G√ľnther wrote:
> Hi,
> On Tue, May 28, 2019 at 08:13:45PM +0930, Dan Kortschak via Librem-5-
> dev wrote:
> > Can anyone suggest how I can debug these two issues?
> 
> In general providing the version (uname -a), related logs (dmesg,
> journalctl -b0), information from/sys/firmware/devicetree and
> e.g. lsmod helps.
> 
> > thanks
> > Dan
> > 
> > On Sun, 2019-05-26 at 08:45 +0930, Dan Kortschak wrote:
> > > I think this is the last couple of questions from me on this
> > > page.
> > > 
> > > I have successfully reflashed the eMMC and that has all worked.
> > > Setting
> > > up the HDMI does not appear to work though.
> > > 
> > >  * I have performed the change at [1] but this does not bring up
> > > the
> > >    HDMI connection and the on-board display remains on.
> 
> uboot is likely not picking up the right DTB then. Check whether
> /boot/dtb symlink points to the right hdmi dtb.
> Also this should print okay when you're using the right device tree:
> 
> $ cat /sys/firmware/devicetree/base/hdmi at 32c00000/status
> 
> I think the docs at
> 
> 
https://developer.puri.sm/Librem5/Development_Environment/Boards/imx8.html#hdmi
> 
> don't match what needs to be done since the image is using uboot's
> distro boot and flash-kernel. When using flash-kernel "custom" dtbs
> should go to /etc/flash-kernel/dtbs (untested):
> 
>    cp <hdmidtb> /etc/flash-kernel/dtbs/
>    flash-kernel
> 
> > >  * The second issue is how to get rsi_sdio to load at boot. I
> > > have
> > >    added rsi_sdio to /etc/modules, but it remains unloaded,
> > > leaving
> > > wi-
> > >    fi off without manual intervention. The wi-fi switch is
> > > correctly
> > >    positioned and wi-fi works fine after modprobing rsi_sdio.
> 
> Did you remove it form the blacklist:
> 
>    
> https://source.puri.sm/Librem5/librem5-devkit-tools/blob/master/etc/modprobe.d/librem5-devkit.conf#L4
> 
> Cheers,
>  -- Guido



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