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

[Dan Kortschak]

Thanks, that has worked.

It seems the name must be exactly librem5-evk.dtb from inspection of
the flash-kernel scripts and experiment.

```
purism at pureos:~$ sudo cp /usr/lib/linux-image-`uname -r`/freescale/librem5-evk-hdmi.dtb /etc/flash-kernel/dtbs/librem5-evk.dtb
purism at pureos:~$ ls /etc/flash-kernel/dtbs/
README.dtbs  librem5-evk.dtb

purism at pureos:~$ sudo flash-kernel 
Using DTB: librem5-evk.dtb
Installing /etc/flash-kernel/dtbs/librem5-evk.dtb into /boot/dtbs/4.18.11-g418cc45f/./librem5-evk.dtb
Taking backup of librem5-evk.dtb.
Installing new librem5-evk.dtb.
flash-kernel: installing version 4.18.11-g418cc45f
Taking backup of vmlinuz.
Installing new vmlinuz.
Taking backup of initrd.img.
Installing new initrd.img.
Generating boot script u-boot image... done.
Taking backup of boot.scr.
Installing new boot.scr.
```

HDMI display on reboot!

On Wed, 2019-05-29 at 10:21 +0200, Guido Günther wrote:
> Hi,
> On Wed, May 29, 2019 at 11:36:29AM +0930, Dan Kortschak wrote:
> > 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
> 
> Is that the location you copied the HDMI device tree to? Can you try
> copying the HDMI DT to /etc/flashkernel/dtbs and run flash-kernel and
> see if that helps with HDMI?
> 
> > 
> > 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.
> 
> I've filed 
> https://source.puri.sm/Librem5/developer.puri.sm/issues/122
> for this.
> 
> > 
> > 
> > 
> > If the documentation that's at the set up guide page is not
> > correct, is
> > there documentation that I can follow that is?
> 
> It's not that the docs aren't correct in general - they're a great
> resource to get started. It's just the DTB part that needs updating:
> 
> Check https://source.puri.sm/Librem5/developer.puri.sm/issues/121
> 
> Cheers,
>  -- Guido
> 
> > 
> > 
> > cheers
> > Dan
> > 
> > 
> > On Tue, 2019-05-28 at 13:14 +0200, Guido Günther 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