diff --git a/arch/powerpc/include/asm/drmem.h b/arch/powerpc/include/asm/drmem.h
index 464e061a6616..54241456420e 100644
--- a/arch/powerpc/include/asm/drmem.h
+++ b/arch/powerpc/include/asm/drmem.h
@@ -35,6 +35,25 @@ extern struct drmem_lmb_info *drmem_info;
 		&drmem_info->lmbs[0],				\
 		&drmem_info->lmbs[drmem_info->n_lmbs - 1])
 
+/*
+ * The of_drconf_cell_v1 struct defines the layout of the LMB data
+ * specified in the ibm,dynamic-memory device tree property.
+ * The property itself is a 32-bit value specifying the number of
+ * LMBs followed by an array of of_drconf_cell_v1 entries, one
+ * per LMB.
+ */
+struct of_drconf_cell_v1 {
+	__be64	base_addr;
+	__be32	drc_index;
+	__be32	reserved;
+	__be32	aa_index;
+	__be32	flags;
+};
+
+#define DRCONF_MEM_ASSIGNED	0x00000008
+#define DRCONF_MEM_AI_INVALID	0x00000040
+#define DRCONF_MEM_RESERVED	0x00000080
+
 static inline u32 drmem_lmb_size(void)
 {
 	return drmem_info->lmb_size;
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 825bd5998701..f0a30a003bd8 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -80,22 +80,6 @@ extern void of_instantiate_rtc(void);
 
 extern int of_get_ibm_chip_id(struct device_node *np);
 
-/* The of_drconf_cell struct defines the layout of the LMB array
- * specified in the device tree property
- * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
- */
-struct of_drconf_cell {
-	u64	base_addr;
-	u32	drc_index;
-	u32	reserved;
-	u32	aa_index;
-	u32	flags;
-};
-
-#define DRCONF_MEM_ASSIGNED	0x00000008
-#define DRCONF_MEM_AI_INVALID	0x00000040
-#define DRCONF_MEM_RESERVED	0x00000080
-
 /*
  * There are two methods for telling firmware what our capabilities are.
  * Newer machines have an "ibm,client-architecture-support" method on the
diff --git a/arch/powerpc/mm/drmem.c b/arch/powerpc/mm/drmem.c
index 05ba0c7dcbed..61bc183013ae 100644
--- a/arch/powerpc/mm/drmem.c
+++ b/arch/powerpc/mm/drmem.c
@@ -66,7 +66,7 @@ static int drmem_update_dt_v1(struct device_node *memory,
 			      struct property *prop)
 {
 	struct property *new_prop;
-	struct of_drconf_cell *dr_cell;
+	struct of_drconf_cell_v1 *dr_cell;
 	struct drmem_lmb *lmb;
 	u32 *p;
 
@@ -77,7 +77,7 @@ static int drmem_update_dt_v1(struct device_node *memory,
 	p = new_prop->value;
 	*p++ = cpu_to_be32(drmem_info->n_lmbs);
 
-	dr_cell = (struct of_drconf_cell *)p;
+	dr_cell = (struct of_drconf_cell_v1 *)p;
 
 	for_each_drmem_lmb(lmb) {
 		dr_cell->base_addr = cpu_to_be64(lmb->base_addr);
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 2043bc2b77b3..c1578f54c626 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -996,7 +996,7 @@ static int pseries_add_mem_node(struct device_node *np)
 
 static int pseries_update_drconf_memory(struct of_reconfig_data *pr)
 {
-	struct of_drconf_cell *new_drmem, *old_drmem;
+	struct of_drconf_cell_v1 *new_drmem, *old_drmem;
 	unsigned long memblock_size;
 	u32 entries;
 	__be32 *p;
@@ -1019,11 +1019,11 @@ static int pseries_update_drconf_memory(struct of_reconfig_data *pr)
 	 * of_drconf_cell's.
 	 */
 	entries = be32_to_cpu(*p++);
-	old_drmem = (struct of_drconf_cell *)p;
+	old_drmem = (struct of_drconf_cell_v1 *)p;
 
 	p = (__be32 *)pr->prop->value;
 	p++;
-	new_drmem = (struct of_drconf_cell *)p;
+	new_drmem = (struct of_drconf_cell_v1 *)p;
 
 	for (i = 0; i < entries; i++) {
 		if ((be32_to_cpu(old_drmem[i].flags) & DRCONF_MEM_ASSIGNED) &&