1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Interconnect framework driver for i.MX8MQ SoC 4 * 5 * Copyright (c) 2019-2020, NXP 6 */ 7 8 #include <linux/module.h> 9 #include <linux/platform_device.h> 10 #include <dt-bindings/interconnect/imx8mq.h> 11 12 #include "imx.h" 13 14 static const struct imx_icc_node_adj_desc imx8mq_dram_adj = { 15 .bw_mul = 1, 16 .bw_div = 4, 17 .phandle_name = "fsl,ddrc", 18 }; 19 20 static const struct imx_icc_node_adj_desc imx8mq_noc_adj = { 21 .bw_mul = 1, 22 .bw_div = 4, 23 .main_noc = true, 24 }; 25 26 /* 27 * Describe bus masters, slaves and connections between them 28 * 29 * This is a simplified subset of the bus diagram, there are several other 30 * PL301 nics which are skipped/merged into PL301_MAIN 31 */ 32 static struct imx_icc_node_desc nodes[] = { 33 DEFINE_BUS_INTERCONNECT("NOC", IMX8MQ_ICN_NOC, &imx8mq_noc_adj, 34 IMX8MQ_ICS_DRAM, IMX8MQ_ICN_MAIN), 35 36 DEFINE_BUS_SLAVE("DRAM", IMX8MQ_ICS_DRAM, &imx8mq_dram_adj), 37 DEFINE_BUS_SLAVE("OCRAM", IMX8MQ_ICS_OCRAM, NULL), 38 DEFINE_BUS_MASTER("A53", IMX8MQ_ICM_A53, IMX8MQ_ICN_NOC), 39 40 /* VPUMIX */ 41 DEFINE_BUS_MASTER("VPU", IMX8MQ_ICM_VPU, IMX8MQ_ICN_VIDEO), 42 DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MQ_ICN_VIDEO, NULL, IMX8MQ_ICN_NOC), 43 44 /* GPUMIX */ 45 DEFINE_BUS_MASTER("GPU", IMX8MQ_ICM_GPU, IMX8MQ_ICN_GPU), 46 DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MQ_ICN_GPU, NULL, IMX8MQ_ICN_NOC), 47 48 /* DISPMIX (only for DCSS) */ 49 DEFINE_BUS_MASTER("DC", IMX8MQ_ICM_DCSS, IMX8MQ_ICN_DCSS), 50 DEFINE_BUS_INTERCONNECT("PL301_DC", IMX8MQ_ICN_DCSS, NULL, IMX8MQ_ICN_NOC), 51 52 /* USBMIX */ 53 DEFINE_BUS_MASTER("USB1", IMX8MQ_ICM_USB1, IMX8MQ_ICN_USB), 54 DEFINE_BUS_MASTER("USB2", IMX8MQ_ICM_USB2, IMX8MQ_ICN_USB), 55 DEFINE_BUS_INTERCONNECT("PL301_USB", IMX8MQ_ICN_USB, NULL, IMX8MQ_ICN_NOC), 56 57 /* PL301_DISPLAY (IPs other than DCSS, inside SUPERMIX) */ 58 DEFINE_BUS_MASTER("CSI1", IMX8MQ_ICM_CSI1, IMX8MQ_ICN_DISPLAY), 59 DEFINE_BUS_MASTER("CSI2", IMX8MQ_ICM_CSI2, IMX8MQ_ICN_DISPLAY), 60 DEFINE_BUS_MASTER("LCDIF", IMX8MQ_ICM_LCDIF, IMX8MQ_ICN_DISPLAY), 61 DEFINE_BUS_INTERCONNECT("PL301_DISPLAY", IMX8MQ_ICN_DISPLAY, NULL, IMX8MQ_ICN_MAIN), 62 63 /* AUDIO */ 64 DEFINE_BUS_MASTER("SDMA2", IMX8MQ_ICM_SDMA2, IMX8MQ_ICN_AUDIO), 65 DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MQ_ICN_AUDIO, NULL, IMX8MQ_ICN_DISPLAY), 66 67 /* ENET */ 68 DEFINE_BUS_MASTER("ENET", IMX8MQ_ICM_ENET, IMX8MQ_ICN_ENET), 69 DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MQ_ICN_ENET, NULL, IMX8MQ_ICN_MAIN), 70 71 /* OTHER */ 72 DEFINE_BUS_MASTER("SDMA1", IMX8MQ_ICM_SDMA1, IMX8MQ_ICN_MAIN), 73 DEFINE_BUS_MASTER("NAND", IMX8MQ_ICM_NAND, IMX8MQ_ICN_MAIN), 74 DEFINE_BUS_MASTER("USDHC1", IMX8MQ_ICM_USDHC1, IMX8MQ_ICN_MAIN), 75 DEFINE_BUS_MASTER("USDHC2", IMX8MQ_ICM_USDHC2, IMX8MQ_ICN_MAIN), 76 DEFINE_BUS_MASTER("PCIE1", IMX8MQ_ICM_PCIE1, IMX8MQ_ICN_MAIN), 77 DEFINE_BUS_MASTER("PCIE2", IMX8MQ_ICM_PCIE2, IMX8MQ_ICN_MAIN), 78 DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MQ_ICN_MAIN, NULL, 79 IMX8MQ_ICN_NOC, IMX8MQ_ICS_OCRAM), 80 }; 81 82 static int imx8mq_icc_probe(struct platform_device *pdev) 83 { 84 return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes)); 85 } 86 87 static int imx8mq_icc_remove(struct platform_device *pdev) 88 { 89 return imx_icc_unregister(pdev); 90 } 91 92 static struct platform_driver imx8mq_icc_driver = { 93 .probe = imx8mq_icc_probe, 94 .remove = imx8mq_icc_remove, 95 .driver = { 96 .name = "imx8mq-interconnect", 97 }, 98 }; 99 100 module_platform_driver(imx8mq_icc_driver); 101 MODULE_ALIAS("platform:imx8mq-interconnect"); 102 MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>"); 103 MODULE_LICENSE("GPL v2"); 104