MTK status update

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Harald Welte laforge at
Sat May 15 23:00:49 UTC 2010

Hi Steve,

On Fri, May 14, 2010 at 11:56:58PM +0200, Steve Markgraf wrote:
> I wanted to give a short status update on the MTK platform, I spent
> the last day implementing a minimal subset of the MTK romloader
> protocol in osmocon.


> When writing something to the UART TX register, I see the output in
> osmocon, and writing to the Baseband powerup register works as well
> (otherwise you would have to hold down the power-button all the
> time).


> Unfortunately there are no schematics for the Mobistel phone I've
> been testing this with, so I haven't found out how to enable e.g.
> the backlight, nothing happens when activating PWM1/2.

yes, most likely the I/O pin function modes need to be set correctly.
It might be best to try to read them from a (running) normal firmware.

> Today I tried to modify the Calypso UART driver for the MTK UART,
> but currently I'm stuck with a strange hang somewhere in the driver,
> maybe I'll look after it tomorrow.

if you have any specific questions, please le me know.  I haven't yet
checked how compatible the UART types of the two devices are.

Good luck!

- Harald Welte <laforge at> 
"Privacy in residential applications is a desirable marketing option."
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