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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Interconnect framework driver for i.MX8MN SoC
- *
- * Copyright (c) 2019-2020, NXP
- */
- #include <linux/module.h>
- #include <linux/platform_device.h>
- #include <dt-bindings/interconnect/imx8mn.h>
- #include "imx.h"
- static const struct imx_icc_node_adj_desc imx8mn_dram_adj = {
- .bw_mul = 1,
- .bw_div = 4,
- .phandle_name = "fsl,ddrc",
- };
- static const struct imx_icc_node_adj_desc imx8mn_noc_adj = {
- .bw_mul = 1,
- .bw_div = 4,
- .main_noc = true,
- };
- /*
- * Describe bus masters, slaves and connections between them
- *
- * This is a simplified subset of the bus diagram, there are several other
- * PL301 nics which are skipped/merged into PL301_MAIN
- */
- static struct imx_icc_node_desc nodes[] = {
- DEFINE_BUS_INTERCONNECT("NOC", IMX8MN_ICN_NOC, &imx8mn_noc_adj,
- IMX8MN_ICS_DRAM, IMX8MN_ICN_MAIN),
- DEFINE_BUS_SLAVE("DRAM", IMX8MN_ICS_DRAM, &imx8mn_dram_adj),
- DEFINE_BUS_SLAVE("OCRAM", IMX8MN_ICS_OCRAM, NULL),
- DEFINE_BUS_MASTER("A53", IMX8MN_ICM_A53, IMX8MN_ICN_NOC),
- /* GPUMIX */
- DEFINE_BUS_MASTER("GPU", IMX8MN_ICM_GPU, IMX8MN_ICN_GPU),
- DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MN_ICN_GPU, NULL, IMX8MN_ICN_NOC),
- /* DISPLAYMIX */
- DEFINE_BUS_MASTER("CSI1", IMX8MN_ICM_CSI1, IMX8MN_ICN_MIPI),
- DEFINE_BUS_MASTER("CSI2", IMX8MN_ICM_CSI2, IMX8MN_ICN_MIPI),
- DEFINE_BUS_MASTER("ISI", IMX8MN_ICM_ISI, IMX8MN_ICN_MIPI),
- DEFINE_BUS_MASTER("LCDIF", IMX8MN_ICM_LCDIF, IMX8MN_ICN_MIPI),
- DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MN_ICN_MIPI, NULL, IMX8MN_ICN_NOC),
- /* USB goes straight to NOC */
- DEFINE_BUS_MASTER("USB", IMX8MN_ICM_USB, IMX8MN_ICN_NOC),
- /* Audio */
- DEFINE_BUS_MASTER("SDMA2", IMX8MN_ICM_SDMA2, IMX8MN_ICN_AUDIO),
- DEFINE_BUS_MASTER("SDMA3", IMX8MN_ICM_SDMA3, IMX8MN_ICN_AUDIO),
- DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MN_ICN_AUDIO, NULL, IMX8MN_ICN_MAIN),
- /* Ethernet */
- DEFINE_BUS_MASTER("ENET", IMX8MN_ICM_ENET, IMX8MN_ICN_ENET),
- DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MN_ICN_ENET, NULL, IMX8MN_ICN_MAIN),
- /* Other */
- DEFINE_BUS_MASTER("SDMA1", IMX8MN_ICM_SDMA1, IMX8MN_ICN_MAIN),
- DEFINE_BUS_MASTER("NAND", IMX8MN_ICM_NAND, IMX8MN_ICN_MAIN),
- DEFINE_BUS_MASTER("USDHC1", IMX8MN_ICM_USDHC1, IMX8MN_ICN_MAIN),
- DEFINE_BUS_MASTER("USDHC2", IMX8MN_ICM_USDHC2, IMX8MN_ICN_MAIN),
- DEFINE_BUS_MASTER("USDHC3", IMX8MN_ICM_USDHC3, IMX8MN_ICN_MAIN),
- DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MN_ICN_MAIN, NULL,
- IMX8MN_ICN_NOC, IMX8MN_ICS_OCRAM),
- };
- static int imx8mn_icc_probe(struct platform_device *pdev)
- {
- return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
- }
- static int imx8mn_icc_remove(struct platform_device *pdev)
- {
- return imx_icc_unregister(pdev);
- }
- static struct platform_driver imx8mn_icc_driver = {
- .probe = imx8mn_icc_probe,
- .remove = imx8mn_icc_remove,
- .driver = {
- .name = "imx8mn-interconnect",
- },
- };
- module_platform_driver(imx8mn_icc_driver);
- MODULE_ALIAS("platform:imx8mn-interconnect");
- MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
- MODULE_LICENSE("GPL v2");
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