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Date: Wed, 5 Aug 2015 13:54:09 +0200
From: Pavel Machek <pavel@ucw.cz>
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Subject: Re: [Ksummit-discuss] [CORE TOPIC] Mainline kernel on a cellphone
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Hi!

> >> Or and did I mention that some manufactures actually put FM radio and GPS
> >> controls behind the Bluetooth chip. So access to these slave devices goes
> >> via the Bluetooth HCI. This means that you have this fun dependency:
> >>
> >> FM radio -> Bluetooth HCI -> UART -> UART slave
> 
> So what I wanted to ask is who else is doing this apart from
> CG2900/STLC2690? Is it a common pattern?

The most important phone in the world (*) does it like that.

- it has extra GPIOs to handle power management

- GPS is connected to the GSM parts, not to bluetooth

Best regards,
									Pavel
(*) Nokia N900.
									
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html