[Letux-kernel] Letux kernel 4.13

H. Nikolaus Schaller hns at goldelico.com
Fri Sep 8 16:37:10 CEST 2017


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



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