powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function

So far, MPC512x used mpc512x_find_ips_freq() to get the bus frequency,
while MPC52xx used mpc52xx_find_ipb_freq().  Despite the different
clock names (IPS vs. IPB) the code was identical.

Use common code for both processor families.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 1 insertions, 31 deletions

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 8e3dd5a0f228..a46bad0c2339 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -47,36 +47,6 @@ static DEFINE_SPINLOCK(mpc52xx_lock);
 static struct mpc52xx_gpt __iomem *mpc52xx_wdt;
 static struct mpc52xx_cdm __iomem *mpc52xx_cdm;
 
-/**
- *      mpc52xx_find_ipb_freq - Find the IPB bus frequency for a device
- *      @node:  device node
- *
- *      Returns IPB bus frequency, or 0 if the bus frequency cannot be found.
- */
-unsigned int
-mpc52xx_find_ipb_freq(struct device_node *node)
-{
-        struct device_node *np;
-        const unsigned int *p_ipb_freq = NULL;
-
-        of_node_get(node);
-        while (node) {
-                p_ipb_freq = of_get_property(node, "bus-frequency", NULL);
-                if (p_ipb_freq)
-                        break;
-
-                np = of_get_parent(node);
-                of_node_put(node);
-                node = np;
-        }
-        if (node)
-                of_node_put(node);
-
-        return p_ipb_freq ? *p_ipb_freq : 0;
-}
-EXPORT_SYMBOL(mpc52xx_find_ipb_freq);
-
-
 /*
  * Configure the XLB arbiter settings to match what Linux expects.
  */
@@ -221,7 +191,7 @@ unsigned int mpc52xx_get_xtal_freq(struct device_node *node)
         if (!mpc52xx_cdm)
                 return 0;
 
-        freq = mpc52xx_find_ipb_freq(node);
+        freq = mpc5xxx_get_bus_frequency(node);
         if (!freq)
                 return 0;