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 <dt-bindings/interconnect/imx8mq.h>
 11
 12#include "imx.h"
 13
 14static const struct imx_icc_node_adj_desc imx8mq_dram_adj = {
 15	.bw_mul = 1,
 16	.bw_div = 4,
 17	.phandle_name = "fsl,ddrc",
 18};
 19
 20static const struct imx_icc_node_adj_desc imx8mq_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 */
 32static struct imx_icc_node_desc nodes[] = {
 33	DEFINE_BUS_INTERCONNECT("NOC", IMX8MQ_ICN_NOC, &imx8mq_noc_adj,
 34			IMX8MQ_ICS_DRAM, IMX8MQ_ICN_MAIN),
 35
 36	DEFINE_BUS_SLAVE("DRAM", IMX8MQ_ICS_DRAM, &imx8mq_dram_adj),
 37	DEFINE_BUS_SLAVE("OCRAM", IMX8MQ_ICS_OCRAM, NULL),
 38	DEFINE_BUS_MASTER("A53", IMX8MQ_ICM_A53, IMX8MQ_ICN_NOC),
 39
 40	/* VPUMIX */
 41	DEFINE_BUS_MASTER("VPU", IMX8MQ_ICM_VPU, IMX8MQ_ICN_VIDEO),
 42	DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MQ_ICN_VIDEO, NULL, IMX8MQ_ICN_NOC),
 43
 44	/* GPUMIX */
 45	DEFINE_BUS_MASTER("GPU", IMX8MQ_ICM_GPU, IMX8MQ_ICN_GPU),
 46	DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MQ_ICN_GPU, NULL, IMX8MQ_ICN_NOC),
 47
 48	/* DISPMIX (only for DCSS) */
 49	DEFINE_BUS_MASTER("DC", IMX8MQ_ICM_DCSS, IMX8MQ_ICN_DCSS),
 50	DEFINE_BUS_INTERCONNECT("PL301_DC", IMX8MQ_ICN_DCSS, NULL, IMX8MQ_ICN_NOC),
 51
 52	/* USBMIX */
 53	DEFINE_BUS_MASTER("USB1", IMX8MQ_ICM_USB1, IMX8MQ_ICN_USB),
 54	DEFINE_BUS_MASTER("USB2", IMX8MQ_ICM_USB2, IMX8MQ_ICN_USB),
 55	DEFINE_BUS_INTERCONNECT("PL301_USB", IMX8MQ_ICN_USB, NULL, IMX8MQ_ICN_NOC),
 56
 57	/* PL301_DISPLAY (IPs other than DCSS, inside SUPERMIX) */
 58	DEFINE_BUS_MASTER("CSI1", IMX8MQ_ICM_CSI1, IMX8MQ_ICN_DISPLAY),
 59	DEFINE_BUS_MASTER("CSI2", IMX8MQ_ICM_CSI2, IMX8MQ_ICN_DISPLAY),
 60	DEFINE_BUS_MASTER("LCDIF", IMX8MQ_ICM_LCDIF, IMX8MQ_ICN_DISPLAY),
 61	DEFINE_BUS_INTERCONNECT("PL301_DISPLAY", IMX8MQ_ICN_DISPLAY, NULL, IMX8MQ_ICN_MAIN),
 62
 63	/* AUDIO */
 64	DEFINE_BUS_MASTER("SDMA2", IMX8MQ_ICM_SDMA2, IMX8MQ_ICN_AUDIO),
 65	DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MQ_ICN_AUDIO, NULL, IMX8MQ_ICN_DISPLAY),
 66
 67	/* ENET */
 68	DEFINE_BUS_MASTER("ENET", IMX8MQ_ICM_ENET, IMX8MQ_ICN_ENET),
 69	DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MQ_ICN_ENET, NULL, IMX8MQ_ICN_MAIN),
 70
 71	/* OTHER */
 72	DEFINE_BUS_MASTER("SDMA1", IMX8MQ_ICM_SDMA1, IMX8MQ_ICN_MAIN),
 73	DEFINE_BUS_MASTER("NAND", IMX8MQ_ICM_NAND, IMX8MQ_ICN_MAIN),
 74	DEFINE_BUS_MASTER("USDHC1", IMX8MQ_ICM_USDHC1, IMX8MQ_ICN_MAIN),
 75	DEFINE_BUS_MASTER("USDHC2", IMX8MQ_ICM_USDHC2, IMX8MQ_ICN_MAIN),
 76	DEFINE_BUS_MASTER("PCIE1", IMX8MQ_ICM_PCIE1, IMX8MQ_ICN_MAIN),
 77	DEFINE_BUS_MASTER("PCIE2", IMX8MQ_ICM_PCIE2, IMX8MQ_ICN_MAIN),
 78	DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MQ_ICN_MAIN, NULL,
 79			IMX8MQ_ICN_NOC, IMX8MQ_ICS_OCRAM),
 80};
 81
 82static int imx8mq_icc_probe(struct platform_device *pdev)
 83{
 84	return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
 85}
 86
 87static int imx8mq_icc_remove(struct platform_device *pdev)
 88{
 89	return imx_icc_unregister(pdev);
 90}
 91
 92static struct platform_driver imx8mq_icc_driver = {
 93	.probe = imx8mq_icc_probe,
 94	.remove = imx8mq_icc_remove,
 95	.driver = {
 96		.name = "imx8mq-interconnect",
 97	},
 98};
 99
100module_platform_driver(imx8mq_icc_driver);
101MODULE_ALIAS("platform:imx8mq-interconnect");
102MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
103MODULE_LICENSE("GPL v2");