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), NULL);
86}
87
88static struct platform_driver imx8mq_icc_driver = {
89	.probe = imx8mq_icc_probe,
90	.remove_new = imx_icc_unregister,
91	.driver = {
92		.name = "imx8mq-interconnect",
93		.sync_state = icc_sync_state,
94	},
95};
96
97module_platform_driver(imx8mq_icc_driver);
98MODULE_ALIAS("platform:imx8mq-interconnect");
99MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
100MODULE_LICENSE("GPL v2");
101