interconnect/imx/imx8mq.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Interconnect framework driver for i.MX8MQ SoC
0004  *
0005  * Copyright (c) 2019-2020, NXP
0006  */
0007
0008 #include <linux/module.h>
0009 #include <linux/platform_device.h>
0010 #include <linux/interconnect-provider.h>
0011 #include <dt-bindings/interconnect/imx8mq.h>
0012
0013 #include "imx.h"
0014
0015 static const struct imx_icc_node_adj_desc imx8mq_dram_adj = {
0016     .bw_mul = 1,
0017     .bw_div = 4,
0018     .phandle_name = "fsl,ddrc",
0019 };
0020
0021 static const struct imx_icc_node_adj_desc imx8mq_noc_adj = {
0022     .bw_mul = 1,
0023     .bw_div = 4,
0024     .main_noc = true,
0025 };
0026
0027 /*
0028  * Describe bus masters, slaves and connections between them
0029  *
0030  * This is a simplified subset of the bus diagram, there are several other
0031  * PL301 nics which are skipped/merged into PL301_MAIN
0032  */
0033 static struct imx_icc_node_desc nodes[] = {
0034     DEFINE_BUS_INTERCONNECT("NOC", IMX8MQ_ICN_NOC, &imx8mq_noc_adj,
0035             IMX8MQ_ICS_DRAM, IMX8MQ_ICN_MAIN),
0036
0037     DEFINE_BUS_SLAVE("DRAM", IMX8MQ_ICS_DRAM, &imx8mq_dram_adj),
0038     DEFINE_BUS_SLAVE("OCRAM", IMX8MQ_ICS_OCRAM, NULL),
0039     DEFINE_BUS_MASTER("A53", IMX8MQ_ICM_A53, IMX8MQ_ICN_NOC),
0040
0041     /* VPUMIX */
0042     DEFINE_BUS_MASTER("VPU", IMX8MQ_ICM_VPU, IMX8MQ_ICN_VIDEO),
0043     DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MQ_ICN_VIDEO, NULL, IMX8MQ_ICN_NOC),
0044
0045     /* GPUMIX */
0046     DEFINE_BUS_MASTER("GPU", IMX8MQ_ICM_GPU, IMX8MQ_ICN_GPU),
0047     DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MQ_ICN_GPU, NULL, IMX8MQ_ICN_NOC),
0048
0049     /* DISPMIX (only for DCSS) */
0050     DEFINE_BUS_MASTER("DC", IMX8MQ_ICM_DCSS, IMX8MQ_ICN_DCSS),
0051     DEFINE_BUS_INTERCONNECT("PL301_DC", IMX8MQ_ICN_DCSS, NULL, IMX8MQ_ICN_NOC),
0052
0053     /* USBMIX */
0054     DEFINE_BUS_MASTER("USB1", IMX8MQ_ICM_USB1, IMX8MQ_ICN_USB),
0055     DEFINE_BUS_MASTER("USB2", IMX8MQ_ICM_USB2, IMX8MQ_ICN_USB),
0056     DEFINE_BUS_INTERCONNECT("PL301_USB", IMX8MQ_ICN_USB, NULL, IMX8MQ_ICN_NOC),
0057
0058     /* PL301_DISPLAY (IPs other than DCSS, inside SUPERMIX) */
0059     DEFINE_BUS_MASTER("CSI1", IMX8MQ_ICM_CSI1, IMX8MQ_ICN_DISPLAY),
0060     DEFINE_BUS_MASTER("CSI2", IMX8MQ_ICM_CSI2, IMX8MQ_ICN_DISPLAY),
0061     DEFINE_BUS_MASTER("LCDIF", IMX8MQ_ICM_LCDIF, IMX8MQ_ICN_DISPLAY),
0062     DEFINE_BUS_INTERCONNECT("PL301_DISPLAY", IMX8MQ_ICN_DISPLAY, NULL, IMX8MQ_ICN_MAIN),
0063
0064     /* AUDIO */
0065     DEFINE_BUS_MASTER("SDMA2", IMX8MQ_ICM_SDMA2, IMX8MQ_ICN_AUDIO),
0066     DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MQ_ICN_AUDIO, NULL, IMX8MQ_ICN_DISPLAY),
0067
0068     /* ENET */
0069     DEFINE_BUS_MASTER("ENET", IMX8MQ_ICM_ENET, IMX8MQ_ICN_ENET),
0070     DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MQ_ICN_ENET, NULL, IMX8MQ_ICN_MAIN),
0071
0072     /* OTHER */
0073     DEFINE_BUS_MASTER("SDMA1", IMX8MQ_ICM_SDMA1, IMX8MQ_ICN_MAIN),
0074     DEFINE_BUS_MASTER("NAND", IMX8MQ_ICM_NAND, IMX8MQ_ICN_MAIN),
0075     DEFINE_BUS_MASTER("USDHC1", IMX8MQ_ICM_USDHC1, IMX8MQ_ICN_MAIN),
0076     DEFINE_BUS_MASTER("USDHC2", IMX8MQ_ICM_USDHC2, IMX8MQ_ICN_MAIN),
0077     DEFINE_BUS_MASTER("PCIE1", IMX8MQ_ICM_PCIE1, IMX8MQ_ICN_MAIN),
0078     DEFINE_BUS_MASTER("PCIE2", IMX8MQ_ICM_PCIE2, IMX8MQ_ICN_MAIN),
0079     DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MQ_ICN_MAIN, NULL,
0080             IMX8MQ_ICN_NOC, IMX8MQ_ICS_OCRAM),
0081 };
0082
0083 static int imx8mq_icc_probe(struct platform_device *pdev)
0084 {
0085     return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL);
0086 }
0087
0088 static int imx8mq_icc_remove(struct platform_device *pdev)
0089 {
0090     return imx_icc_unregister(pdev);
0091 }
0092
0093 static struct platform_driver imx8mq_icc_driver = {
0094     .probe = imx8mq_icc_probe,
0095     .remove = imx8mq_icc_remove,
0096     .driver = {
0097         .name = "imx8mq-interconnect",
0098         .sync_state = icc_sync_state,
0099     },
0100 };
0101
0102 module_platform_driver(imx8mq_icc_driver);
0103 MODULE_ALIAS("platform:imx8mq-interconnect");
0104 MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
0105 MODULE_LICENSE("GPL v2");