AT%N0187 openmoko echo patch?

Lorn Potter lpotter at
Tue Sep 2 01:13:20 CEST 2008

Jim Morris wrote:
> roguemoko at wrote:
>> Cesar Eduardo Barros wrote:
>>> NeilBrown escreveu:
>>>> On Mon, September 1, 2008 6:59 pm, Yorick Moko wrote:
>>>>> On Mon, Sep 1, 2008 at 10:43 AM, Lorn Potter <lpotter at>
>>>>> wrote:
>>>>>> They certainly are not in our copy of the calypso spec's that we got
>>>>>> directly from TI. If it is, I must be missing it, and haven't found it.
>> But couldn't both of those have been documented? And if they have not 
>> been, might be classed as incompetent. They are after all just part of 
>> the modem instruction set.
>> To not release the entire lot is a bit lame.
> Using an undocumented feature in a chip is very dangerous. Minor changes to the fab, even though the 
> chip has the same number may change or remove that undocumented feature that the phones now rely on.
> If this is going to be adopted in builds, then someone at OM needs to get TI to officially support 
> that feature so that it does not disappear later.

If it disappears later, we do have the source and can simply remove the additions. As well, it is 
not going to hurt because the modem would just respond with an error and move on to the next command.

Lorn 'ljp' Potter
Software Engineer, Systems Group, Trolltech, a Nokia company

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