drivers/interconnect/imx/imx8mq.c

   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");