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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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