--- zzzz-none-000/linux-3.10.107/arch/arm64/include/asm/device.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/arm64/include/asm/device.h	2021-02-04 17:41:59.000000000 +0000
@@ -18,6 +18,11 @@
 
 struct dev_archdata {
 	struct dma_map_ops *dma_ops;
+#ifdef CONFIG_IOMMU_API
+	void *iommu;			/* private IOMMU data */
+#endif
+	struct dma_iommu_mapping	*mapping;
+	bool dma_coherent;
 };
 
 struct pdev_archdata {