--- zzzz-none-000/linux-2.6.39.4/arch/arm/mm/ioremap.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/arm/mm/ioremap.c	2021-11-10 13:38:14.000000000 +0000
@@ -204,8 +204,12 @@
 	/*
 	 * Don't allow RAM to be mapped - this causes problems with ARMv6+
 	 */
-	if (WARN_ON(pfn_valid(pfn)))
-		return NULL;
+#if defined(CONFIG_ARM_PUMA_C55_MEMORY) || (CONFIG_ARM_PUMA_C55_MEMORY >= 0)
+     /*--- but access to C55-P-Code should be uncached! ---*/
+    if(mtype != MT_DEVICE)
+#endif/*--- #if !defined(CONFIG_ARM_PUMA_C55_MEMORY) || (CONFIG_ARM_PUMA_C55_MEMORY == 0) ---*/
+        if (WARN_ON(pfn_valid(pfn)))
+            return NULL;
 
 	type = get_mem_type(mtype);
 	if (!type)