97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Interconnect framework driver for i.MX8MN SoC
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*
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* Copyright (c) 2019-2020, NXP
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/interconnect/imx8mn.h>
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#include "imx.h"
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static const struct imx_icc_node_adj_desc imx8mn_dram_adj = {
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.bw_mul = 1,
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.bw_div = 4,
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.phandle_name = "fsl,ddrc",
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};
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static const struct imx_icc_node_adj_desc imx8mn_noc_adj = {
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.bw_mul = 1,
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.bw_div = 4,
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.main_noc = true,
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};
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/*
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* Describe bus masters, slaves and connections between them
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*
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* This is a simplified subset of the bus diagram, there are several other
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* PL301 nics which are skipped/merged into PL301_MAIN
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*/
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static struct imx_icc_node_desc nodes[] = {
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DEFINE_BUS_INTERCONNECT("NOC", IMX8MN_ICN_NOC, &imx8mn_noc_adj,
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IMX8MN_ICS_DRAM, IMX8MN_ICN_MAIN),
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DEFINE_BUS_SLAVE("DRAM", IMX8MN_ICS_DRAM, &imx8mn_dram_adj),
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DEFINE_BUS_SLAVE("OCRAM", IMX8MN_ICS_OCRAM, NULL),
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DEFINE_BUS_MASTER("A53", IMX8MN_ICM_A53, IMX8MN_ICN_NOC),
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/* GPUMIX */
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DEFINE_BUS_MASTER("GPU", IMX8MN_ICM_GPU, IMX8MN_ICN_GPU),
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DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MN_ICN_GPU, NULL, IMX8MN_ICN_NOC),
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/* DISPLAYMIX */
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DEFINE_BUS_MASTER("CSI1", IMX8MN_ICM_CSI1, IMX8MN_ICN_MIPI),
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DEFINE_BUS_MASTER("CSI2", IMX8MN_ICM_CSI2, IMX8MN_ICN_MIPI),
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DEFINE_BUS_MASTER("ISI", IMX8MN_ICM_ISI, IMX8MN_ICN_MIPI),
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DEFINE_BUS_MASTER("LCDIF", IMX8MN_ICM_LCDIF, IMX8MN_ICN_MIPI),
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DEFINE_BUS_INTERCONNECT("PL301_MIPI", IMX8MN_ICN_MIPI, NULL, IMX8MN_ICN_NOC),
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/* USB goes straight to NOC */
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DEFINE_BUS_MASTER("USB", IMX8MN_ICM_USB, IMX8MN_ICN_NOC),
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/* Audio */
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DEFINE_BUS_MASTER("SDMA2", IMX8MN_ICM_SDMA2, IMX8MN_ICN_AUDIO),
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DEFINE_BUS_MASTER("SDMA3", IMX8MN_ICM_SDMA3, IMX8MN_ICN_AUDIO),
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DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MN_ICN_AUDIO, NULL, IMX8MN_ICN_MAIN),
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/* Ethernet */
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DEFINE_BUS_MASTER("ENET", IMX8MN_ICM_ENET, IMX8MN_ICN_ENET),
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DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MN_ICN_ENET, NULL, IMX8MN_ICN_MAIN),
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/* Other */
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DEFINE_BUS_MASTER("SDMA1", IMX8MN_ICM_SDMA1, IMX8MN_ICN_MAIN),
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DEFINE_BUS_MASTER("NAND", IMX8MN_ICM_NAND, IMX8MN_ICN_MAIN),
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DEFINE_BUS_MASTER("USDHC1", IMX8MN_ICM_USDHC1, IMX8MN_ICN_MAIN),
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DEFINE_BUS_MASTER("USDHC2", IMX8MN_ICM_USDHC2, IMX8MN_ICN_MAIN),
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DEFINE_BUS_MASTER("USDHC3", IMX8MN_ICM_USDHC3, IMX8MN_ICN_MAIN),
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DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MN_ICN_MAIN, NULL,
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IMX8MN_ICN_NOC, IMX8MN_ICS_OCRAM),
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};
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static int imx8mn_icc_probe(struct platform_device *pdev)
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{
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return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes), NULL);
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}
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static int imx8mn_icc_remove(struct platform_device *pdev)
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{
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imx_icc_unregister(pdev);
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return 0;
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}
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static struct platform_driver imx8mn_icc_driver = {
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.probe = imx8mn_icc_probe,
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.remove = imx8mn_icc_remove,
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.driver = {
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.name = "imx8mn-interconnect",
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},
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};
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module_platform_driver(imx8mn_icc_driver);
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MODULE_ALIAS("platform:imx8mn-interconnect");
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MODULE_AUTHOR("Leonard Crestez <leonard.crestez@nxp.com>");
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MODULE_LICENSE("GPL v2");
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