From: Wolfgang Grandegger <wg@grandegger.com>
Date: Wed, 11 Mar 2009 15:36:26 +0000 (-0600)
Subject: powerpc/5200: add function to return external clock frequency
X-Git-Tag: v2.6.30-rc1~619^2~30^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=df8a95f46f8e43a24003abe2efaca8c63c895b54;p=pandora-kernel.git

powerpc/5200: add function to return external clock frequency

This patch adds the utility function mpc52xx_get_xtal_freq() to get
the frequency of the external oscillator clock connected to the pin
SYS_XTAL_IN. The MSCAN may us it as clock source. Unfortunately, this
value is not available from the FDT blob, but it can be determined
from the IPB frequency.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

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