[Letux-kernel] Letux kernel 4.13

H. Nikolaus Schaller hns at goldelico.com
Fri Sep 8 17:05:35 CEST 2017


> Am 08.09.2017 um 16:49 schrieb Linux-SWAT <openpandora at free.fr>:
> Hi,
> apart aTc's long-forgotten -next project, there's no effort to update the whole Pandora OS inc. the kernel.

Well, the official 3.2 kernel is mature and very robust so it is
wise to apply the "never touch a running system" rule.

On the other hand a 4.13 kernel has a lot of interesting new features.
And there are approx. 9 months left over until there will be no maintainance
by official Linux any more:


> And there's a lack of communication about your kernel for OP, I mean if you or ED or notaz post a pinned thread, it will add a lot of visibility.

I think here on this (kernel related) list there are some OpenPandora
owners which would be enough to test a little more and talk about it :)

Not only me here but outside the list...

> Some questions :
> Does your kernel needs u-boot to be updated ?

No. Can boot from SD card in left slot.

> Does it run the command line ?


> Does it "run" X ?

Yes. It can even run PyraOS (aka Debian 9 + extensions).

> What is known to be broken ?

Nubs. Sound. I am not sure about Bluetooth and TV-Out.
And power management may be weaker.

The first two are of course very big blocking points.

And recently there is a regression for Display & WiFi.


> LS
> Le 2017-09-08 16:37, H. Nikolaus Schaller a écrit :
>> Hi,
>>> Am 08.09.2017 um 10:28 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>> Hi,
>>> I didn't find time to make a big announcement, but Letux 4.13 is here:
>>> 	http://git.goldelico.com/?p=gta04-kernel.git;a=shortlog;h=refs/heads/letux-4.13
>>> What has changed since Letux 4.12?
>>> * added a new experimental GTA04 camera driver and made it work in SXGA mode
>>> * added support for Udoo Neo
>>> * removed TILER patches because they failed to rebase and hence do not work any more
>>> * fix for omap3isp pinmux (to make GTA04 camera work)
>>> * added GPS Pulse Per Second (GTA04A5 only)
>>> * added preliminary and not tested JZ4730 SoC support and Mipsbook_400 device tree
>>> * made bq27421 reprogramming for Pyra battery capacity work
>>> So we got some improvements for the GTA04 and Pyra and basic (mainly untested) support
>>> for two new devices (Udoo neo, i.MX6 and Letux 400, MIPS).
>>> But we also got a big regression that TILER for Pyra isn't working any more.
>>> I also found problems with the OpenPandora: some warning about duplicate hsmmc.2 (WiFi)
>>> and a kernel paging error for OMAPDSS so that the display is not working any more.
>> While trying a hackish workaround for the hsmmc stuff it also made the
>> OMAPDSS panel
>> problem disappear. So there might just be one problem with two symptoms.
>> While looking for that, I found that the last kernel where WiFi did
>> work is our letux-4.7.
>> In letux-4.8 and later the chip isn't found any more and firmware fails to load:
>> 4.4.0	no mmc2 sysfs message, WiFi available, DSS works
>> 4.6.0	no mmc2 sysfs message, WiFi available, DSS works
>> 4.7.0	no mmc2 sysfs message, WiFi not available, DSS works
>> 4.8.0	no mmc2 sysfs message, WiFi not available, DSS works
>> 4.12.0	no mmc2 sysfs message, WiFi not available, DSS works
>> 4.13.0	sysfs mmc2 warning, WiFi not available, DSS fails (unless hack
>> is applied)
>> This makes me wonder if nobody is testing on the OpenPandora from time
>> to time (besides
>> me, but I can't do everything)?
>>> Still not properly working is the generic-adc-battery driver (reports wrong voltage/amperes).
>>> So if anyone has fixes for these problems, please let us know.
>> BR and thanks,
>> Nikolaus
>> _______________________________________________
>> Kernel mailing list
>> Kernel at pyra-handheld.com
>> http://pyra-handheld.com/cgi-bin/mailman/listinfo/kernel

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