projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4b54bf47 LC |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* | |
| 3 | * Interconnect framework driver for i.MX8MN 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/imx8mn.h> | |
| 11 | ||
| 12 | #include "imx.h" | |
| 13 | ||
| 14 | static const struct imx_icc_node_adj_desc imx8mn_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 imx8mn_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", IMX8MN_ICN_NOC, &imx8mn_noc_adj, | |
| 34 | IMX8MN_ICS_DRAM, IMX8MN_ICN_MAIN), | |
| 35 | ||
| 36 | DEFINE_BUS_SLAVE("DRAM", IMX8MN_ICS_DRAM, &imx8mn_dram_adj), | |
| 37 | DEFINE_BUS_SLAVE("OCRAM", IMX8MN_ICS_OCRAM, NULL), | |
| 38 | DEFINE_BUS_MASTER("A53", IMX8MN_ICM_A53, IMX8MN_ICN_NOC), | |
| 39 | ||
| 40 | /* GPUMIX */ | |
| 41 | DEFINE_BUS_MASTER("GPU", IMX8MN_ICM_GPU, IMX8MN_ICN_GPU), | |
| 42 | DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MN_ICN_GPU, NULL, IMX8MN_ICN_NOC), | |
| 43 | ||
| 44 | /* DISPLAYMIX */ | |
| 45 | DEFINE_BUS_MASTER("CSI1", IMX8MN_ICM_CSI1, IMX8MN_ICN_MIPI), | |
| 46 | DEFINE_BUS_MASTER("CSI2", IMX8MN_ICM_CSI2, IMX8MN_ICN_MIPI), | |
| 47 | DEFINE_BUS_MASTER("ISI", IMX8MN_ICM_ISI, IMX8MN_ICN_MIPI), | |
| 48 | DEFINE_BUS_MASTER("LCDIF", IMX8MN_ICM_LCDIF, IMX8MN_ICN_MIPI), | |
| 49 | DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MN_ICN_MIPI, NULL, IMX8MN_ICN_NOC), | |
| 50 | ||
| 51 | /* USB goes straight to NOC */ | |
| 52 | DEFINE_BUS_MASTER("USB", IMX8MN_ICM_USB, IMX8MN_ICN_NOC), | |
| 53 | ||
| 54 | /* Audio */ | |
| 55 | DEFINE_BUS_MASTER("SDMA2", IMX8MN_ICM_SDMA2, IMX8MN_ICN_AUDIO), | |
| 56 | DEFINE_BUS_MASTER("SDMA3", IMX8MN_ICM_SDMA3, IMX8MN_ICN_AUDIO), | |
| 57 | DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MN_ICN_AUDIO, NULL, IMX8MN_ICN_MAIN), | |
| 58 | ||
| 59 | /* Ethernet */ | |
| 60 | DEFINE_BUS_MASTER("ENET", IMX8MN_ICM_ENET, IMX8MN_ICN_ENET), | |
| 61 | DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MN_ICN_ENET, NULL, IMX8MN_ICN_MAIN), | |
| 62 | ||
| 63 | /* Other */ | |
| 64 | DEFINE_BUS_MASTER("SDMA1", IMX8MN_ICM_SDMA1, IMX8MN_ICN_MAIN), | |
| 65 | DEFINE_BUS_MASTER("NAND", IMX8MN_ICM_NAND, IMX8MN_ICN_MAIN), | |
| 66 | DEFINE_BUS_MASTER("USDHC1", IMX8MN_ICM_USDHC1, IMX8MN_ICN_MAIN), | |
| 67 | DEFINE_BUS_MASTER("USDHC2", IMX8MN_ICM_USDHC2, IMX8MN_ICN_MAIN), | |
| 68 | DEFINE_BUS_MASTER("USDHC3", IMX8MN_ICM_USDHC3, IMX8MN_ICN_MAIN), | |
| 69 | DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MN_ICN_MAIN, NULL, | |
| 70 | IMX8MN_ICN_NOC, IMX8MN_ICS_OCRAM), | |
| 71 | }; | |
| 72 | ||
| 73 | static int imx8mn_icc_probe(struct platform_device *pdev) | |
| 74 | { | |
| 7980d85a | 75 | return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL); |
| 4b54bf47 LC |
76 | } |
| 77 | ||
| 4b54bf47 LC |
78 | static struct platform_driver imx8mn_icc_driver = { |
| 79 | .probe = imx8mn_icc_probe, | |
| 1841d085 | 80 | .remove_new = imx_icc_unregister, |
| 4b54bf47 LC |
81 | .driver = { |
| 82 | .name = "imx8mn-interconnect", | |
| 83 | }, | |
| 84 | }; | |
| 85 | ||
| 86 | module_platform_driver(imx8mn_icc_driver); | |
| 87 | MODULE_ALIAS("platform:imx8mn-interconnect"); | |
| 88 | MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>"); | |
| 89 | MODULE_LICENSE("GPL v2"); |