interconnect/imx/imx8mm.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Interconnect framework driver for i.MX8MM SoC
0004  *
0005  * Copyright (c) 2019, BayLibre
0006  * Copyright (c) 2019-2020, NXP
0007  * Author: Alexandre Bailon <abailon@baylibre.com>
0008  * Author: Leonard Crestez <leonard.crestez@nxp.com>
0009  */
0010
0011 #include <linux/module.h>
0012 #include <linux/platform_device.h>
0013 #include <dt-bindings/interconnect/imx8mm.h>
0014
0015 #include "imx.h"
0016
0017 static const struct imx_icc_node_adj_desc imx8mm_dram_adj = {
0018     .bw_mul = 1,
0019     .bw_div = 16,
0020     .phandle_name = "fsl,ddrc",
0021 };
0022
0023 static const struct imx_icc_node_adj_desc imx8mm_noc_adj = {
0024     .bw_mul = 1,
0025     .bw_div = 16,
0026     .main_noc = true,
0027 };
0028
0029 /*
0030  * Describe bus masters, slaves and connections between them
0031  *
0032  * This is a simplified subset of the bus diagram, there are several other
0033  * PL301 nics which are skipped/merged into PL301_MAIN
0034  */
0035 static struct imx_icc_node_desc nodes[] = {
0036     DEFINE_BUS_INTERCONNECT("NOC", IMX8MM_ICN_NOC, &imx8mm_noc_adj,
0037             IMX8MM_ICS_DRAM, IMX8MM_ICN_MAIN),
0038
0039     DEFINE_BUS_SLAVE("DRAM", IMX8MM_ICS_DRAM, &imx8mm_dram_adj),
0040     DEFINE_BUS_SLAVE("OCRAM", IMX8MM_ICS_OCRAM, NULL),
0041     DEFINE_BUS_MASTER("A53", IMX8MM_ICM_A53, IMX8MM_ICN_NOC),
0042
0043     /* VPUMIX */
0044     DEFINE_BUS_MASTER("VPU H1", IMX8MM_ICM_VPU_H1, IMX8MM_ICN_VIDEO),
0045     DEFINE_BUS_MASTER("VPU G1", IMX8MM_ICM_VPU_G1, IMX8MM_ICN_VIDEO),
0046     DEFINE_BUS_MASTER("VPU G2", IMX8MM_ICM_VPU_G2, IMX8MM_ICN_VIDEO),
0047     DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MM_ICN_VIDEO, NULL, IMX8MM_ICN_NOC),
0048
0049     /* GPUMIX */
0050     DEFINE_BUS_MASTER("GPU 2D", IMX8MM_ICM_GPU2D, IMX8MM_ICN_GPU),
0051     DEFINE_BUS_MASTER("GPU 3D", IMX8MM_ICM_GPU3D, IMX8MM_ICN_GPU),
0052     DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MM_ICN_GPU, NULL, IMX8MM_ICN_NOC),
0053
0054     /* DISPLAYMIX */
0055     DEFINE_BUS_MASTER("CSI", IMX8MM_ICM_CSI, IMX8MM_ICN_MIPI),
0056     DEFINE_BUS_MASTER("LCDIF", IMX8MM_ICM_LCDIF, IMX8MM_ICN_MIPI),
0057     DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MM_ICN_MIPI, NULL, IMX8MM_ICN_NOC),
0058
0059     /* HSIO */
0060     DEFINE_BUS_MASTER("USB1", IMX8MM_ICM_USB1, IMX8MM_ICN_HSIO),
0061     DEFINE_BUS_MASTER("USB2", IMX8MM_ICM_USB2, IMX8MM_ICN_HSIO),
0062     DEFINE_BUS_MASTER("PCIE", IMX8MM_ICM_PCIE, IMX8MM_ICN_HSIO),
0063     DEFINE_BUS_INTERCONNECT("PL301_HSIO", IMX8MM_ICN_HSIO, NULL, IMX8MM_ICN_NOC),
0064
0065     /* Audio */
0066     DEFINE_BUS_MASTER("SDMA2", IMX8MM_ICM_SDMA2, IMX8MM_ICN_AUDIO),
0067     DEFINE_BUS_MASTER("SDMA3", IMX8MM_ICM_SDMA3, IMX8MM_ICN_AUDIO),
0068     DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MM_ICN_AUDIO, NULL, IMX8MM_ICN_MAIN),
0069
0070     /* Ethernet */
0071     DEFINE_BUS_MASTER("ENET", IMX8MM_ICM_ENET, IMX8MM_ICN_ENET),
0072     DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MM_ICN_ENET, NULL, IMX8MM_ICN_MAIN),
0073
0074     /* Other */
0075     DEFINE_BUS_MASTER("SDMA1", IMX8MM_ICM_SDMA1, IMX8MM_ICN_MAIN),
0076     DEFINE_BUS_MASTER("NAND", IMX8MM_ICM_NAND, IMX8MM_ICN_MAIN),
0077     DEFINE_BUS_MASTER("USDHC1", IMX8MM_ICM_USDHC1, IMX8MM_ICN_MAIN),
0078     DEFINE_BUS_MASTER("USDHC2", IMX8MM_ICM_USDHC2, IMX8MM_ICN_MAIN),
0079     DEFINE_BUS_MASTER("USDHC3", IMX8MM_ICM_USDHC3, IMX8MM_ICN_MAIN),
0080     DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MM_ICN_MAIN, NULL,
0081             IMX8MM_ICN_NOC, IMX8MM_ICS_OCRAM),
0082 };
0083
0084 static int imx8mm_icc_probe(struct platform_device *pdev)
0085 {
0086     return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL);
0087 }
0088
0089 static int imx8mm_icc_remove(struct platform_device *pdev)
0090 {
0091     return imx_icc_unregister(pdev);
0092 }
0093
0094 static struct platform_driver imx8mm_icc_driver = {
0095     .probe = imx8mm_icc_probe,
0096     .remove = imx8mm_icc_remove,
0097     .driver = {
0098         .name = "imx8mm-interconnect",
0099     },
0100 };
0101
0102 module_platform_driver(imx8mm_icc_driver);
0103 MODULE_AUTHOR("Alexandre Bailon <abailon@baylibre.com>");
0104 MODULE_LICENSE("GPL v2");
0105 MODULE_ALIAS("platform:imx8mm-interconnect");