On Monday 22 August 2011 16:09:43 Mark Salter wrote:

+/*
+ * Parse device tree for existence of an EMIF (External Memory Interface)
+ * and initialize it if found.
+ */
+static int __init c6x_emifa_init(void)
+{
+       struct emifa_regs __iomem *regs;
+       struct device_node *node;
+       const __be32 *p;
+       int i, len;
+
+       node = of_find_compatible_node(NULL, NULL, "ti,c64x+emifa");
+       if (!node)
+               return 0;
+
+       regs = of_iomap(node, 0);
+       if (!regs)
+               return 0;
+
+       /* emif power/clocks */
+       soc_dev_enable(SOC_DEV_EMIF, 0);
+
+       p = of_get_property(node, "ti,emifa-ce-config", &len);
+       if (p) {
+               len /= sizeof(u32);
+               if (len > NUM_EMIFA_CHIP_ENABLES)
+                       len = NUM_EMIFA_CHIP_ENABLES;
+               for (i = 0; i <= len; i++)
+                       soc_writel(be32_to_cpup(&p[i]), &regs->cecfg[i]);
+       }
+
+       p = of_get_property(node, "ti,emifa-burst-priority", &len);
+       if (p && len == sizeof(u32))
+               soc_writel(be32_to_cpup(p), &regs->bprio);
+
+       p = of_get_property(node, "ti,emifa-async-wait-control", &len);
+       if (p && len == sizeof(u32))
+               soc_writel(be32_to_cpup(p), &regs->awcc);
+
+       of_node_put(node);
+       return 0;
+}
+pure_initcall(c6x_emifa_init);

It looks like you are missing an iounmap here. Obviously a nop on nommu, but
it caught my eye anyway and perheps you get an mmu at some point.

	Arnd