drivers/interconnect/imx/imx8mm.c

   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");