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
imx8mm_icc_probe(struct platform_device * pdev)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 struct platform_driver imx8mm_icc_driver = {
90 .probe = imx8mm_icc_probe,
91 .remove_new = imx_icc_unregister,
92 .driver = {
93 .name = "imx8mm-interconnect",
94 },
95 };
96
97 module_platform_driver(imx8mm_icc_driver);
98 MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
99 MODULE_DESCRIPTION("Interconnect framework driver for i.MX8MM SoC");
100 MODULE_LICENSE("GPL v2");
101 MODULE_ALIAS("platform:imx8mm-interconnect");
102