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 <linux/interconnect-provider.h> 11 #include <dt-bindings/interconnect/imx8mq.h> 12 13 #include "imx.h" 14 15 static const struct imx_icc_node_adj_desc imx8mq_dram_adj = { 16 .bw_mul = 1, 17 .bw_div = 4, 18 .phandle_name = "fsl,ddrc", 19 }; 20 21 static const struct imx_icc_node_adj_desc imx8mq_noc_adj = { 22 .bw_mul = 1, 23 .bw_div = 4, 24 .main_noc = true, 25 }; 26 27 /* 28 * Describe bus masters, slaves and connections between them 29 * 30 * This is a simplified subset of the bus diagram, there are several other 31 * PL301 nics which are skipped/merged into PL301_MAIN 32 */ 33 static struct imx_icc_node_desc nodes[] = { 34 DEFINE_BUS_INTERCONNECT("NOC", IMX8MQ_ICN_NOC, &imx8mq_noc_adj, 35 IMX8MQ_ICS_DRAM, IMX8MQ_ICN_MAIN), 36 37 DEFINE_BUS_SLAVE("DRAM", IMX8MQ_ICS_DRAM, &imx8mq_dram_adj), 38 DEFINE_BUS_SLAVE("OCRAM", IMX8MQ_ICS_OCRAM, NULL), 39 DEFINE_BUS_MASTER("A53", IMX8MQ_ICM_A53, IMX8MQ_ICN_NOC), 40 41 /* VPUMIX */ 42 DEFINE_BUS_MASTER("VPU", IMX8MQ_ICM_VPU, IMX8MQ_ICN_VIDEO), 43 DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MQ_ICN_VIDEO, NULL, IMX8MQ_ICN_NOC), 44 45 /* GPUMIX */ 46 DEFINE_BUS_MASTER("GPU", IMX8MQ_ICM_GPU, IMX8MQ_ICN_GPU), 47 DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MQ_ICN_GPU, NULL, IMX8MQ_ICN_NOC), 48 49 /* DISPMIX (only for DCSS) */ 50 DEFINE_BUS_MASTER("DC", IMX8MQ_ICM_DCSS, IMX8MQ_ICN_DCSS), 51 DEFINE_BUS_INTERCONNECT("PL301_DC", IMX8MQ_ICN_DCSS, NULL, IMX8MQ_ICN_NOC), 52 53 /* USBMIX */ 54 DEFINE_BUS_MASTER("USB1", IMX8MQ_ICM_USB1, IMX8MQ_ICN_USB), 55 DEFINE_BUS_MASTER("USB2", IMX8MQ_ICM_USB2, IMX8MQ_ICN_USB), 56 DEFINE_BUS_INTERCONNECT("PL301_USB", IMX8MQ_ICN_USB, NULL, IMX8MQ_ICN_NOC), 57 58 /* PL301_DISPLAY (IPs other than DCSS, inside SUPERMIX) */ 59 DEFINE_BUS_MASTER("CSI1", IMX8MQ_ICM_CSI1, IMX8MQ_ICN_DISPLAY), 60 DEFINE_BUS_MASTER("CSI2", IMX8MQ_ICM_CSI2, IMX8MQ_ICN_DISPLAY), 61 DEFINE_BUS_MASTER("LCDIF", IMX8MQ_ICM_LCDIF, IMX8MQ_ICN_DISPLAY), 62 DEFINE_BUS_INTERCONNECT("PL301_DISPLAY", IMX8MQ_ICN_DISPLAY, NULL, IMX8MQ_ICN_MAIN), 63 64 /* AUDIO */ 65 DEFINE_BUS_MASTER("SDMA2", IMX8MQ_ICM_SDMA2, IMX8MQ_ICN_AUDIO), 66 DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MQ_ICN_AUDIO, NULL, IMX8MQ_ICN_DISPLAY), 67 68 /* ENET */ 69 DEFINE_BUS_MASTER("ENET", IMX8MQ_ICM_ENET, IMX8MQ_ICN_ENET), 70 DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MQ_ICN_ENET, NULL, IMX8MQ_ICN_MAIN), 71 72 /* OTHER */ 73 DEFINE_BUS_MASTER("SDMA1", IMX8MQ_ICM_SDMA1, IMX8MQ_ICN_MAIN), 74 DEFINE_BUS_MASTER("NAND", IMX8MQ_ICM_NAND, IMX8MQ_ICN_MAIN), 75 DEFINE_BUS_MASTER("USDHC1", IMX8MQ_ICM_USDHC1, IMX8MQ_ICN_MAIN), 76 DEFINE_BUS_MASTER("USDHC2", IMX8MQ_ICM_USDHC2, IMX8MQ_ICN_MAIN), 77 DEFINE_BUS_MASTER("PCIE1", IMX8MQ_ICM_PCIE1, IMX8MQ_ICN_MAIN), 78 DEFINE_BUS_MASTER("PCIE2", IMX8MQ_ICM_PCIE2, IMX8MQ_ICN_MAIN), 79 DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MQ_ICN_MAIN, NULL, 80 IMX8MQ_ICN_NOC, IMX8MQ_ICS_OCRAM), 81 }; 82 83 static int imx8mq_icc_probe(struct platform_device *pdev) 84 { 85 return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes)); 86 } 87 88 static int imx8mq_icc_remove(struct platform_device *pdev) 89 { 90 return imx_icc_unregister(pdev); 91 } 92 93 static struct platform_driver imx8mq_icc_driver = { 94 .probe = imx8mq_icc_probe, 95 .remove = imx8mq_icc_remove, 96 .driver = { 97 .name = "imx8mq-interconnect", 98 .sync_state = icc_sync_state, 99 }, 100 }; 101 102 module_platform_driver(imx8mq_icc_driver); 103 MODULE_ALIAS("platform:imx8mq-interconnect"); 104 MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>"); 105 MODULE_LICENSE("GPL v2"); 106