interconnect/imx/imx8mn.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Interconnect framework driver for i.MX8MN SoC
0004  *
0005  * Copyright (c) 2019-2020, NXP
0006  */
0007
0008 #include <linux/module.h>
0009 #include <linux/platform_device.h>
0010 #include <dt-bindings/interconnect/imx8mn.h>
0011
0012 #include "imx.h"
0013
0014 static const struct imx_icc_node_adj_desc imx8mn_dram_adj = {
0015     .bw_mul = 1,
0016     .bw_div = 4,
0017     .phandle_name = "fsl,ddrc",
0018 };
0019
0020 static const struct imx_icc_node_adj_desc imx8mn_noc_adj = {
0021     .bw_mul = 1,
0022     .bw_div = 4,
0023     .main_noc = true,
0024 };
0025
0026 /*
0027  * Describe bus masters, slaves and connections between them
0028  *
0029  * This is a simplified subset of the bus diagram, there are several other
0030  * PL301 nics which are skipped/merged into PL301_MAIN
0031  */
0032 static struct imx_icc_node_desc nodes[] = {
0033     DEFINE_BUS_INTERCONNECT("NOC", IMX8MN_ICN_NOC, &imx8mn_noc_adj,
0034             IMX8MN_ICS_DRAM, IMX8MN_ICN_MAIN),
0035
0036     DEFINE_BUS_SLAVE("DRAM", IMX8MN_ICS_DRAM, &imx8mn_dram_adj),
0037     DEFINE_BUS_SLAVE("OCRAM", IMX8MN_ICS_OCRAM, NULL),
0038     DEFINE_BUS_MASTER("A53", IMX8MN_ICM_A53, IMX8MN_ICN_NOC),
0039
0040     /* GPUMIX */
0041     DEFINE_BUS_MASTER("GPU", IMX8MN_ICM_GPU, IMX8MN_ICN_GPU),
0042     DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MN_ICN_GPU, NULL, IMX8MN_ICN_NOC),
0043
0044     /* DISPLAYMIX */
0045     DEFINE_BUS_MASTER("CSI1", IMX8MN_ICM_CSI1, IMX8MN_ICN_MIPI),
0046     DEFINE_BUS_MASTER("CSI2", IMX8MN_ICM_CSI2, IMX8MN_ICN_MIPI),
0047     DEFINE_BUS_MASTER("ISI", IMX8MN_ICM_ISI, IMX8MN_ICN_MIPI),
0048     DEFINE_BUS_MASTER("LCDIF", IMX8MN_ICM_LCDIF, IMX8MN_ICN_MIPI),
0049     DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MN_ICN_MIPI, NULL, IMX8MN_ICN_NOC),
0050
0051     /* USB goes straight to NOC */
0052     DEFINE_BUS_MASTER("USB", IMX8MN_ICM_USB, IMX8MN_ICN_NOC),
0053
0054     /* Audio */
0055     DEFINE_BUS_MASTER("SDMA2", IMX8MN_ICM_SDMA2, IMX8MN_ICN_AUDIO),
0056     DEFINE_BUS_MASTER("SDMA3", IMX8MN_ICM_SDMA3, IMX8MN_ICN_AUDIO),
0057     DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MN_ICN_AUDIO, NULL, IMX8MN_ICN_MAIN),
0058
0059     /* Ethernet */
0060     DEFINE_BUS_MASTER("ENET", IMX8MN_ICM_ENET, IMX8MN_ICN_ENET),
0061     DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MN_ICN_ENET, NULL, IMX8MN_ICN_MAIN),
0062
0063     /* Other */
0064     DEFINE_BUS_MASTER("SDMA1", IMX8MN_ICM_SDMA1, IMX8MN_ICN_MAIN),
0065     DEFINE_BUS_MASTER("NAND", IMX8MN_ICM_NAND, IMX8MN_ICN_MAIN),
0066     DEFINE_BUS_MASTER("USDHC1", IMX8MN_ICM_USDHC1, IMX8MN_ICN_MAIN),
0067     DEFINE_BUS_MASTER("USDHC2", IMX8MN_ICM_USDHC2, IMX8MN_ICN_MAIN),
0068     DEFINE_BUS_MASTER("USDHC3", IMX8MN_ICM_USDHC3, IMX8MN_ICN_MAIN),
0069     DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MN_ICN_MAIN, NULL,
0070             IMX8MN_ICN_NOC, IMX8MN_ICS_OCRAM),
0071 };
0072
0073 static int imx8mn_icc_probe(struct platform_device *pdev)
0074 {
0075     return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL);
0076 }
0077
0078 static int imx8mn_icc_remove(struct platform_device *pdev)
0079 {
0080     return imx_icc_unregister(pdev);
0081 }
0082
0083 static struct platform_driver imx8mn_icc_driver = {
0084     .probe = imx8mn_icc_probe,
0085     .remove = imx8mn_icc_remove,
0086     .driver = {
0087         .name = "imx8mn-interconnect",
0088     },
0089 };
0090
0091 module_platform_driver(imx8mn_icc_driver);
0092 MODULE_ALIAS("platform:imx8mn-interconnect");
0093 MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
0094 MODULE_LICENSE("GPL v2");