1 files changed, 13 insertions, 25 deletions

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 2dd415ff55..3bc201e07e 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -13,10 +13,9 @@
 #undef DEBUG
 
 #include <linux/kernel.h>
-
+#include <linux/of_platform.h>
 #include <asm/io.h>
 #include <asm/prom.h>
-#include <asm/of_platform.h>
 #include <asm/mpc52xx.h>
 
 
@@ -76,44 +75,33 @@ mpc52xx_find_ipb_freq(struct device_node *node)
 EXPORT_SYMBOL(mpc52xx_find_ipb_freq);
 
 
+/*
+ * Configure the XLB arbiter settings to match what Linux expects.
+ */
 void __init
-mpc52xx_setup_cpu(void)
+mpc5200_setup_xlb_arbiter(void)
 {
-        struct mpc52xx_cdm  __iomem *cdm;
         struct mpc52xx_xlb  __iomem *xlb;
 
-        /* Map zones */
-        cdm = mpc52xx_find_and_map("mpc5200-cdm");
         xlb = mpc52xx_find_and_map("mpc5200-xlb");
-
-        if (!cdm || !xlb) {
+        if (!xlb) {
                 printk(KERN_ERR __FILE__ ": "
-                        "Error while mapping CDM/XLB during mpc52xx_setup_cpu. "
+                        "Error mapping XLB in mpc52xx_setup_cpu().  "
                         "Expect some abnormal behavior\n");
-                goto unmap_regs;
+                return;
         }
 
-        /* Use internal 48 Mhz */
-        out_8(&cdm->ext_48mhz_en, 0x00);
-        out_8(&cdm->fd_enable, 0x01);
-        if (in_be32(&cdm->rstcfg) & 0x40)       /* Assumes 33Mhz clock */
-                out_be16(&cdm->fd_counters, 0x0001);
-        else
-                out_be16(&cdm->fd_counters, 0x5555);
-
         /* Configure the XLB Arbiter priorities */
         out_be32(&xlb->master_pri_enable, 0xff);
         out_be32(&xlb->master_priority, 0x11111111);
 
-        /* Disable XLB pipelining */
-        /* (cfr errate 292. We could do this only just before ATA PIO
-            transaction and re-enable it afterwards ...) */
+        /* Disable XLB pipelining
+         * (cfr errate 292. We could do this only just before ATA PIO
+         *  transaction and re-enable it afterwards ...)
+         */
         out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
 
-        /* Unmap zones */
-unmap_regs:
-        if (cdm) iounmap(cdm);
-        if (xlb) iounmap(xlb);
+        iounmap(xlb);
 }
 
 void __init