CONFIG_SYS_CLK_FREQ
hi all,
Quick question on CONFIG_SYS_CLK_FREQ
For system running with 33MHz is it correct to define it as 33,333,333 or should it be 33,000,000.
It shouldnt concern too much, but seeing that something like 33,333,000 is even used, couldnt help wonder what should it really be..
Signature · 1 line
Daniel
Hi Daniel,
Quoted 4 lines · Daniel Ann
Quick question on
CONFIG_SYS_CLK_FREQFor system running with 33MHz is it correct to define it as 33,333,333 or should it be 33,000,000.
You have to use what _realy_ is used on your hardware. So check with your hardware designers, if they soldered a 33.0 MHz oscillator or a 33.333 or...
Quoted 3 lines
It shouldnt concern too much, but seeing that something like 33,333,000 is even used, couldnt help wonder what should it really be..
Yes, it should concern. Keep in mind, that a change from 33.0 to 33.3 is 1% and this could result in the system clock running 1% slower (or faster) as desired!
Best regards,
Stefan
Quoted 2 lines · Stefan Roese
You have to use what _realy_ is used on your hardware. So check with your hardware designers, if they soldered a 33.0 MHz oscillator or a 33.333 or...
Thanks. Quick peak at the osc. it's got 33.000000 written on it :P
Signature · 1 line
Daniel
Hi,
I have not seen this configuration variable
mentioned in the u-boot README file in the
base directory(latest release) - can
CONFIG_SYS_CLK_FREQ be used for all platforms??
Specifically i would like to use it or something similar to allow me to set the clock frequency of the ARM Core on the Integrator/CP to run at 140MHz (max. reliable).
At the moment Linux appears to be defaulting
to running at some slow default core clock
frequency on the platform (probably ~25MHz).
Any info. appreciated,
Regards,
Alan.
Quoted 11 lines
-- Original Message --
From: Daniel Ann <[email protected]>
Reply-To: Daniel Ann <[email protected]>
To: Stefan Roese <[email protected]>
Subject: Re: [U-Boot-Users]CONFIG_SYS_CLK_FREQ
Cc: u-boot-users at lists.sourceforge.net
Date: Thu, 7 Apr 2005 15:29:05 +0900Quoted 1 line · Stefan Roese
You have to use what _realy_ is used on your hardware. So check with
your
Quoted 18 lines
Quoted 1 line
hardware designers, if they soldered a 33.0 MHz oscillator or a 33.333
or...
Thanks. Quick peak at the osc. it's got 33.000000 written on it :P
Signature · 12 lines
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