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From: Dominik Brodowski <linux@dominikbrodowski.de>
To: dhowells@redhat.com
Cc: davej@redhat.com, uclinux-dev@uclinux.org,
	cpufreq@www.linux.org.uk, linux-kernel@vger.kernel.org
Subject: FRV and CPU frequency scaling
Date: Tue, 2 Nov 2004 13:35:09 +0100	[thread overview]
Message-ID: <20041102123509.GA8259@dominikbrodowski.de> (raw)

While reading through the FRV Documentation patch I stumbled across the file
"clock.txt" file which says:

+ (*) clock.txt
+
+     A description of the CPU clock scaling interface.
+

Could you use the generic cpufreq core (drivers/cpufreq/) for this, please?

And could you explain the difference between p0, cm and cmode settings to
me, and how they can be combined, please? Or is the following assumption 
correct?

The CPU core frequency can only be modified on FR405 CPUs, while p0 and cm 
are available on all CPUs and allow for modification of the frequency of 
some sort of external busses.

Thanks,
	Dominik

WARNING: multiple messages have this Message-ID (diff)
From: Dominik Brodowski <linux@dominikbrodowski.de>
To: dhowells@redhat.com
Cc: cpufreq@www.linux.org.uk, davej@redhat.com,
	linux-kernel@vger.kernel.org, uclinux-dev@uclinux.org
Subject: FRV and CPU frequency scaling
Date: Tue, 2 Nov 2004 13:35:09 +0100	[thread overview]
Message-ID: <20041102123509.GA8259@dominikbrodowski.de> (raw)

While reading through the FRV Documentation patch I stumbled across the file
"clock.txt" file which says:

+ (*) clock.txt
+
+     A description of the CPU clock scaling interface.
+

Could you use the generic cpufreq core (drivers/cpufreq/) for this, please?

And could you explain the difference between p0, cm and cmode settings to
me, and how they can be combined, please? Or is the following assumption 
correct?

The CPU core frequency can only be modified on FR405 CPUs, while p0 and cm 
are available on all CPUs and allow for modification of the frequency of 
some sort of external busses.

Thanks,
	Dominik

             reply	other threads:[~2004-11-02 12:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-02 12:35 Dominik Brodowski [this message]
2004-11-02 12:35 ` FRV and CPU frequency scaling Dominik Brodowski
2004-11-02 13:35 ` David Howells
2004-11-02 13:35   ` David Howells

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