1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Interconnect framework driver for i.MX8MM SoC 4 * 5 * Copyright (c) 2019, BayLibre 6 * Copyright (c) 2019-2020, NXP 7 * Author: Alexandre Bailon <abailon@baylibre.com> 8 * Author: Leonard Crestez <leonard.crestez@nxp.com> 9 */ 10 11 #include <linux/module.h> 12 #include <linux/platform_device.h> 13 #include <dt-bindings/interconnect/imx8mm.h> 14 15 #include "imx.h" 16 17 static const struct imx_icc_node_adj_desc imx8mm_dram_adj = { 18 .bw_mul = 1, 19 .bw_div = 16, 20 .phandle_name = "fsl,ddrc", 21 }; 22 23 static const struct imx_icc_node_adj_desc imx8mm_noc_adj = { 24 .bw_mul = 1, 25 .bw_div = 16, 26 .main_noc = true, 27 }; 28 29 /* 30 * Describe bus masters, slaves and connections between them 31 * 32 * This is a simplified subset of the bus diagram, there are several other 33 * PL301 nics which are skipped/merged into PL301_MAIN 34 */ 35 static struct imx_icc_node_desc nodes[] = { 36 DEFINE_BUS_INTERCONNECT("NOC", IMX8MM_ICN_NOC, &imx8mm_noc_adj, 37 IMX8MM_ICS_DRAM, IMX8MM_ICN_MAIN), 38 39 DEFINE_BUS_SLAVE("DRAM", IMX8MM_ICS_DRAM, &imx8mm_dram_adj), 40 DEFINE_BUS_SLAVE("OCRAM", IMX8MM_ICS_OCRAM, NULL), 41 DEFINE_BUS_MASTER("A53", IMX8MM_ICM_A53, IMX8MM_ICN_NOC), 42 43 /* VPUMIX */ 44 DEFINE_BUS_MASTER("VPU H1", IMX8MM_ICM_VPU_H1, IMX8MM_ICN_VIDEO), 45 DEFINE_BUS_MASTER("VPU G1", IMX8MM_ICM_VPU_G1, IMX8MM_ICN_VIDEO), 46 DEFINE_BUS_MASTER("VPU G2", IMX8MM_ICM_VPU_G2, IMX8MM_ICN_VIDEO), 47 DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MM_ICN_VIDEO, NULL, IMX8MM_ICN_NOC), 48 49 /* GPUMIX */ 50 DEFINE_BUS_MASTER("GPU 2D", IMX8MM_ICM_GPU2D, IMX8MM_ICN_GPU), 51 DEFINE_BUS_MASTER("GPU 3D", IMX8MM_ICM_GPU3D, IMX8MM_ICN_GPU), 52 DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MM_ICN_GPU, NULL, IMX8MM_ICN_NOC), 53 54 /* DISPLAYMIX */ 55 DEFINE_BUS_MASTER("CSI", IMX8MM_ICM_CSI, IMX8MM_ICN_MIPI), 56 DEFINE_BUS_MASTER("LCDIF", IMX8MM_ICM_LCDIF, IMX8MM_ICN_MIPI), 57 DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MM_ICN_MIPI, NULL, IMX8MM_ICN_NOC), 58 59 /* HSIO */ 60 DEFINE_BUS_MASTER("USB1", IMX8MM_ICM_USB1, IMX8MM_ICN_HSIO), 61 DEFINE_BUS_MASTER("USB2", IMX8MM_ICM_USB2, IMX8MM_ICN_HSIO), 62 DEFINE_BUS_MASTER("PCIE", IMX8MM_ICM_PCIE, IMX8MM_ICN_HSIO), 63 DEFINE_BUS_INTERCONNECT("PL301_HSIO", IMX8MM_ICN_HSIO, NULL, IMX8MM_ICN_NOC), 64 65 /* Audio */ 66 DEFINE_BUS_MASTER("SDMA2", IMX8MM_ICM_SDMA2, IMX8MM_ICN_AUDIO), 67 DEFINE_BUS_MASTER("SDMA3", IMX8MM_ICM_SDMA3, IMX8MM_ICN_AUDIO), 68 DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MM_ICN_AUDIO, NULL, IMX8MM_ICN_MAIN), 69 70 /* Ethernet */ 71 DEFINE_BUS_MASTER("ENET", IMX8MM_ICM_ENET, IMX8MM_ICN_ENET), 72 DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MM_ICN_ENET, NULL, IMX8MM_ICN_MAIN), 73 74 /* Other */ 75 DEFINE_BUS_MASTER("SDMA1", IMX8MM_ICM_SDMA1, IMX8MM_ICN_MAIN), 76 DEFINE_BUS_MASTER("NAND", IMX8MM_ICM_NAND, IMX8MM_ICN_MAIN), 77 DEFINE_BUS_MASTER("USDHC1", IMX8MM_ICM_USDHC1, IMX8MM_ICN_MAIN), 78 DEFINE_BUS_MASTER("USDHC2", IMX8MM_ICM_USDHC2, IMX8MM_ICN_MAIN), 79 DEFINE_BUS_MASTER("USDHC3", IMX8MM_ICM_USDHC3, IMX8MM_ICN_MAIN), 80 DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MM_ICN_MAIN, NULL, 81 IMX8MM_ICN_NOC, IMX8MM_ICS_OCRAM), 82 }; 83 84 static int imx8mm_icc_probe(struct platform_device *pdev) 85 { 86 return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL); 87 } 88 89 static int imx8mm_icc_remove(struct platform_device *pdev) 90 { 91 imx_icc_unregister(pdev); 92 93 return 0; 94 } 95 96 static struct platform_driver imx8mm_icc_driver = { 97 .probe = imx8mm_icc_probe, 98 .remove = imx8mm_icc_remove, 99 .driver = { 100 .name = "imx8mm-interconnect", 101 }, 102 }; 103 104 module_platform_driver(imx8mm_icc_driver); 105 MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>"); 106 MODULE_LICENSE("GPL v2"); 107 MODULE_ALIAS("platform:imx8mm-interconnect"); 108