linux/drivers/interconnect/imx/imx8mq.c
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   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
  15static 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
  21static 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 */
  33static 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
  83static int imx8mq_icc_probe(struct platform_device *pdev)
  84{
  85        return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
  86}
  87
  88static int imx8mq_icc_remove(struct platform_device *pdev)
  89{
  90        return imx_icc_unregister(pdev);
  91}
  92
  93static 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
 102module_platform_driver(imx8mq_icc_driver);
 103MODULE_ALIAS("platform:imx8mq-interconnect");
 104MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
 105MODULE_LICENSE("GPL v2");
 106