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 
17 static 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 
23 static 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  */
35 static 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 
84 static int imx8mm_icc_probe(struct platform_device *pdev)
85 {
86 	return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL);
87 }
88 
89 static int imx8mm_icc_remove(struct platform_device *pdev)
90 {
91 	return imx_icc_unregister(pdev);
92 }
93 
94 static 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 
102 module_platform_driver(imx8mm_icc_driver);
103 MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
104 MODULE_LICENSE("GPL v2");
105 MODULE_ALIAS("platform:imx8mm-interconnect");
106