+/**
+ * Translate a DMA address from the DT into a CPU physical address
+ *
+ * The translation relies on the "dma-ranges" property.
+ *
+ * @param blob Pointer to device tree blob
+ * @param node_offset Node DT offset
+ * @param in_addr Pointer to the DMA address to translate
+ * Return: translated DMA address or OF_BAD_ADDR on error
+ */
+u64 fdt_translate_dma_address(const void *blob, int node_offset,
+ const __be32 *in_addr);
+
+/**
+ * Get DMA ranges for a specifc node, this is useful to perform bus->cpu and
+ * cpu->bus address translations
+ *
+ * @param blob Pointer to device tree blob
+ * @param node_offset Node DT offset
+ * @param cpu Pointer to variable storing the range's cpu address
+ * @param bus Pointer to variable storing the range's bus address
+ * @param size Pointer to variable storing the range's size
+ * Return: translated DMA address or OF_BAD_ADDR on error
+ */
+int fdt_get_dma_range(const void *blob, int node_offset, phys_addr_t *cpu,
+ dma_addr_t *bus, u64 *size);
+