[Gta04-owner] 3.16-rc5

[Dr. H. Nikolaus Schaller]

Hi,

Am 21.07.2014 um 13:31 schrieb Neil Jerram:

> On 2014-07-21 06:49, Dr. H. Nikolaus Schaller wrote:
> 
>> Well, what I know is that HDQ works really fine without any patch,
>> if we disable the WiFi/BT logic in the device tree.
>> So I suspect that we don’t have to patch HDQ at all - just find out what
>> goes wrong in WiFi/BT. Maybe some imbalanced IRQ disabling or
>> something which stops the HDQ low level stuff from working.
> 
> Ah, OK.  I think it might be interesting for me, then, to disable the WiFi/BT logic for now, and to look at problems in other areas.  How do I disable that logic?

comment out the device tree nodes for the wi2wi chips. Or delete their kernel modules from the SD card (I think the drivers are not configured to be built  into the kernel to keep it as small as possible).

> 
>> And we didn’t need to patch the clock frameworks for the non-DT kernels
>> used up to 3.12. So I am not sure if we are even trying the right thing with
>> the patch you have suggested.
>> Regarding the charging indication it should be independent of HDQ
>> because the twl_battery driver runs independently.
> 
> OK.  I inferred from previous messages that HDQ was needed for correct battery charging, but I guess that that was wrong.  What does HDQ do, then?

HDQ allows to read the real charging status and current consumption from the fuel gauge (bq27000 chip) built into the battery. So that if you swap the batteries the system displays the status of the new battery. But it is not required for charging to work.

BR,
Nikolaus