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
14 static 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
20 static 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 */
32 static 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
imx8mq_icc_probe(struct platform_device * pdev)82 static int imx8mq_icc_probe(struct platform_device *pdev)
83 {
84 return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
85 }
86
imx8mq_icc_remove(struct platform_device * pdev)87 static int imx8mq_icc_remove(struct platform_device *pdev)
88 {
89 return imx_icc_unregister(pdev);
90 }
91
92 static 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
100 module_platform_driver(imx8mq_icc_driver);
101 MODULE_ALIAS("platform:imx8mq-interconnect");
102 MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
103 MODULE_LICENSE("GPL v2");
104
