[ECOS] at91Arm7sek running without the pll

[Tobias Nielsen]

Nope, i have a situation where the the external components to drive
the PLL is not connected - therefore i have to run without the PLL

2008/2/25, Andrew Lunn <andrew@lunn.ch>:
> On Mon, Feb 25, 2008 at 03:47:26PM +0100, Tobias Nielsen wrote:
>  > I have been sitting for some time to try to figure out a way to
>  > completely skip the PLL AND at the same time use the main oscillator
>  > bypass feature. I can see that the usage of the PLL is more or less
>  > directly coded in to a macro in the header:
>  >
>  > hal/arm/at91/at91sam7s/current/include/hal_platform_setup.h
>  >
>  > But if i want to completely bypass that feature and follow the
>  > instructions in the datasheet that states OSCBYPASS should be set to 1
>  > and MOSCEN must be set 0 - i have absolutely no idea on how to put
>  > that functionality in to the system without hacking a lot of code that
>  > i in principle have no knowledge about...
>  >
>  > Do anyone know how to make that bypass?
>
>
> It will be a little bit messy.
>
>  Why do you need to turn the PLL off? Can you live with the PLL simply
>  multiplying by 1 and dividing by 1?
>
>
>             Andrew
>


-- 
Yours kindly

Tobias Nielsen

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