+static int rk_iommu_domain_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+
+ dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms), GFP_KERNEL);
+ if (!dev->dma_parms)
+ return -ENOMEM;
+
+ /* Set dma_ops for dev, otherwise it would be dummy_dma_ops */
+ arch_setup_dma_ops(dev, 0, DMA_BIT_MASK(32), NULL, false);
+
+ dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
+ dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
+
+ return 0;
+}
+
+static struct platform_driver rk_iommu_domain_driver = {
+ .probe = rk_iommu_domain_probe,
+ .driver = {
+ .name = "rk_iommu_domain",
+ },
+};
+