GTA04 PMU / Core arch block diagram v1 / Bluetooth interface

[Andy Green]

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Somebody in the thread at some point said:
| On Wed, Apr 02, 2008 at 01:51:39PM +0100, Andy Green wrote:
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|> Somebody in the thread at some point said:
|>
|> | | the MPU, so you can make calls over BT with the CPU off?
|> |
|> | ...oooh, very good point.
|>
|> Hum don't know if we can do it or not.  The current BT device uses USB
|> to communicate with the CPU, which will go down with the CPU.  We can
|> still power it though, so if it doesn't reset itself or otherwise rely
|> on USB comms (eg, for clock) it can work.
|
| I think BT should rather use a high-speed UART or SDIO  than USB.  USB
| is really cumbersome in the suspend/resume case, esp. with regard to the
| wakeup-from-bluetooth case (talk to Marcel Holtmann, if you need
| details)

Sounds good to me, I don't hold any torch for USB interface on it.  I
guess it is just pricing / availability question out of my scope.  What
do you think about a different bluetooth interface based around UART or
SDIO, Tony?

- -Andy
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