diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 5ea1693..3788a54 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -23,9 +23,20 @@ config MTD_PHYSMAP
 	  To compile this driver as a module, choose M here: the
 	  module will be called physmap.
 
+config MTD_PHYSMAP_COMPAT
+	bool "Physmap compat support"
+	depends on MTD_PHYSMAP
+	default n
+	help
+	  Setup a simple mapping via the Kconfig options.  Normally the
+	  physmap configuration options are done via your board's
+	  resource file.
+
+	  If unsure, say N here.
+
 config MTD_PHYSMAP_START
 	hex "Physical start address of flash mapping"
-	depends on MTD_PHYSMAP
+	depends on MTD_PHYSMAP_COMPAT
 	default "0x8000000"
 	help
 	  This is the physical memory location at which the flash chips
@@ -37,7 +48,7 @@ config MTD_PHYSMAP_START
 
 config MTD_PHYSMAP_LEN
 	hex "Physical length of flash mapping"
-	depends on MTD_PHYSMAP
+	depends on MTD_PHYSMAP_COMPAT
 	default "0"
 	help
 	  This is the total length of the mapping of the flash chips on
@@ -51,7 +62,7 @@ config MTD_PHYSMAP_LEN
 
 config MTD_PHYSMAP_BANKWIDTH
 	int "Bank width in octets"
-	depends on MTD_PHYSMAP
+	depends on MTD_PHYSMAP_COMPAT
 	default "2"
 	help
 	  This is the total width of the data bus of the flash devices
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 42d844f..e2f99b7 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -259,14 +259,7 @@ static struct platform_driver physmap_flash_driver = {
 };
 
 
-#ifdef CONFIG_MTD_PHYSMAP_LEN
-#if CONFIG_MTD_PHYSMAP_LEN != 0
-#warning using PHYSMAP compat code
-#define PHYSMAP_COMPAT
-#endif
-#endif
-
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 static struct physmap_flash_data physmap_flash_data = {
 	.width		= CONFIG_MTD_PHYSMAP_BANKWIDTH,
 };
@@ -310,7 +303,7 @@ static int __init physmap_init(void)
 	int err;
 
 	err = platform_driver_register(&physmap_flash_driver);
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 	if (err == 0)
 		platform_device_register(&physmap_flash);
 #endif
@@ -320,7 +313,7 @@ static int __init physmap_init(void)
 
 static void __exit physmap_exit(void)
 {
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 	platform_device_unregister(&physmap_flash);
 #endif
 	platform_driver_unregister(&physmap_flash_driver);
@@ -334,8 +327,7 @@ MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
 MODULE_DESCRIPTION("Generic configurable MTD map driver");
 
 /* legacy platform drivers can't hotplug or coldplg */
-#ifndef PHYSMAP_COMPAT
+#ifndef CONFIG_MTD_PHYSMAP_COMPAT
 /* work with hotplug and coldplug */
 MODULE_ALIAS("platform:physmap-flash");
 #endif
-