Re: [Ipodlinux-devel] new ipod, etc

[Bernard L. <le...@bo...>]

The iPodding website has a picture of the disected doc connector... 
That might help a little.

<http://www.ipodding.com/modules.php?set_albumName=album07&id=dock_con_labeled&op=modload&name=gallery&file=index&include=view_photo.php>


On Thu, 2003-10-23 at 20:54, PALFFY Daniel wrote:
> Hi!
> 
> I've got my ipod yesterday... I've just compiled a kernel with firewire
> support to try playing with it from linux.
> 
> > Reviving the initrd may indeed be a good plan - unfortunately I don't
> > have any of the old code hanging around.  It should be quite easy to get
> > going though as there are a number of examples with the other uClinux
> > targets using it.  The full uClinux "distribution" build has a mechanism
> > to automatically build the disk image.
> >
> > From what I remember there actually isn't much more required than whats
> > in the head-arm-ipod.S.  Once you enable the compile option I think the
> > rest of the code just switches on...
> 
> Ok, thanks. I will try this in the weekend if everything goes well.
> 
> > As for the serial stuff doing it in the kernel may be kinda hard...
> > however the ipod serial driver is already working so in theory if you
> > just started up a console on the right tty line it would all work!  I
> 
> Ok, I'll try this next week - I don't have a scope at home :(
> 
> > assume the g2 hardware has one of the UARTs IN line connected up for the
> > remote control.  I would assume the g3 has the OUT line for the same
> > UART connected up (the other UART is used for the piezo).  Unfortunately
> > I have no idea what pin on the connector might be used (is there a
> > dissection out there somewhere??).
> 
> I couldn't find it now. But IIRC I've seen one a a month ago or so, they
> said that the circuit inside the remote was the same, only the connector
> changed. But it would be nice if I knew the layout of at least the known
> pins on the connector.
> 
> > Other thoughts; yes the CPU is speced to go up to at least 90MHz.
> > Cranking it up doesn't really improve performance as the problem is more
> > that the memory is not fast enough.  The 96KB of on chip ram _is_ fast
> > enough and that does help.  The problem is getting balance right between
> > putting code/data in the fast ram and then splitting the workload
> > between the two cpu cores.
> 
> Ok, then my feeling about the normal SDRAM being slow was correct. Then
> still, we should look into the DSP tremor project and find out, how much
> memory they need, etc. I'll try this when the basic hardware is running.
> 
> > The SRAM starts at 0x28000000 the on board ram is 0x40000000.
> 
> Thanks.
> 
> --
> Dani
> 			...and Linux for all.
> 
> 
> 
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