linux/drivers/interconnect/imx/imx8mm.c
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   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
  17static 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
  23static 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 */
  35static 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
  84static int imx8mm_icc_probe(struct platform_device *pdev)
  85{
  86        return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
  87}
  88
  89static int imx8mm_icc_remove(struct platform_device *pdev)
  90{
  91        return imx_icc_unregister(pdev);
  92}
  93
  94static struct platform_driver imx8mm_icc_driver = {
  95        .probe = imx8mm_icc_probe,
  96        .remove = imx8mm_icc_remove,
  97        .driver = {
  98                .name = "imx8mm-interconnect",
  99        },
 100};
 101
 102module_platform_driver(imx8mm_icc_driver);
 103MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
 104MODULE_LICENSE("GPL v2");
 105MODULE_ALIAS("platform:imx8mm-interconnect");
 106