Re: hardware related suggestion

From: Shawn Anderson <sa_at_xmission.com>
Date: Wed, 31 Mar 2004 17:47:03 -0700

On Wed, Mar 31, 2004 at 11:11:35PM +0200, Eddi wrote:
> Hi,
>
> I don't know a lot of c programming, but I'm trying to understand as
> much as possible...
> Well...

I still have to learn alot in order to understand all of this
arm stuff too :-)

> Memory map
> perhaps we have to update phisical memory address in
> include/asm/arch-sa1100/h3600.h with the phisical addresses I found with
> the map bootloader command
>

yeh, im thinking that too, get the addresses you found and put it in
h4000_io_desc[]...

>
> Bluetooth related gpio
> bluetooth disabled
> GPIO# D S A INTER
> 12 O 0 0
>
> 42 O 0 0
> 43 O 0 0
> 44 O 0 0
> 45 O 0 0
>
> gpio with bt enabled: (mmmm it seems to act like h3970)
>
> 12 O 0 1
>
> 42 I 1 3
> 43 O 1 3
> 44 I 0 3
> 45 O 0 3
>
> //#define GPIO_NR_H4000_ (12) /* Bluetooth */ seems to be correct...,
> but maybe an asic related line like in h1900?!?
>

>From the pxa255 developers manual it says that when GPIO 12 is used as
alternate function 1, it is 32 kHz out for the Clocks & Power Manager
Unit. But I get the same results as you, those GPIOs are definatly
bluetooth related.

cya,
sa
Received on Thu Apr 01 2004 - 00:47:07 EST

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