drivers/iommu/mtk_iommu.c

144  * In M4U 4GB mode, the physical address is remapped as below:
160  * The Region 'A'(I/O) can NOT be mapped by M4U; For Region 'B'/'C'/'D', the
167 static LIST_HEAD(m4ulist);	/* List all the M4U HWs */
191  * There may be 1 or 2 M4U HWs, But we always expect they are in the same domain
194  * Here always return the mtk_iommu_data of the first probed M4U where the
480 	if (!data->m4u_dom) { /* Initialize the M4U HW */  in mtk_iommu_attach_device()
519 	/* The "4GB mode" M4U physically can not use the lower remap of Dram. */  in mtk_iommu_map()
639 		/* Get the m4u device */  in mtk_iommu_of_xlate()
1071 	{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},
1072 	{ .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},
1073 	{ .compatible = "mediatek,mt8167-m4u", .data = &mt8167_data},
1074 	{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},
1075 	{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},
1076 	{ .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data},