From 4b54bf4763e3725dcceaac379df4ef78df3b9fcd Mon Sep 17 00:00:00 2001 From: Leonard Crestez Date: Tue, 28 Apr 2020 20:03:02 +0300 Subject: interconnect: imx: Add platform driver for imx8mn Add a platform driver for the i.MX8MN SoC describing bus topology, based on internal documentation. Signed-off-by: Leonard Crestez Link: https://lore.kernel.org/r/338a5409ce88811ba6c940ba06441db3faa8c187.1586174566.git.leonard.crestez@nxp.com Signed-off-by: Georgi Djakov --- drivers/interconnect/imx/Kconfig | 4 ++ drivers/interconnect/imx/Makefile | 2 + drivers/interconnect/imx/imx8mn.c | 94 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) create mode 100644 drivers/interconnect/imx/imx8mn.c (limited to 'drivers/interconnect') diff --git a/drivers/interconnect/imx/Kconfig b/drivers/interconnect/imx/Kconfig index a2e6127f25b7..be2928362bb7 100644 --- a/drivers/interconnect/imx/Kconfig +++ b/drivers/interconnect/imx/Kconfig @@ -8,6 +8,10 @@ config INTERCONNECT_IMX8MM tristate "i.MX8MM interconnect driver" depends on INTERCONNECT_IMX +config INTERCONNECT_IMX8MN + tristate "i.MX8MN interconnect driver" + depends on INTERCONNECT_IMX + config INTERCONNECT_IMX8MQ tristate "i.MX8MQ interconnect driver" depends on INTERCONNECT_IMX diff --git a/drivers/interconnect/imx/Makefile b/drivers/interconnect/imx/Makefile index e7d7e029d6c7..21fd5233754f 100644 --- a/drivers/interconnect/imx/Makefile +++ b/drivers/interconnect/imx/Makefile @@ -1,7 +1,9 @@ imx-interconnect-objs := imx.o imx8mm-interconnect-objs := imx8mm.o imx8mq-interconnect-objs := imx8mq.o +imx8mn-interconnect-objs := imx8mn.o obj-$(CONFIG_INTERCONNECT_IMX) += imx-interconnect.o obj-$(CONFIG_INTERCONNECT_IMX8MM) += imx8mm-interconnect.o obj-$(CONFIG_INTERCONNECT_IMX8MQ) += imx8mq-interconnect.o +obj-$(CONFIG_INTERCONNECT_IMX8MN) += imx8mn-interconnect.o diff --git a/drivers/interconnect/imx/imx8mn.c b/drivers/interconnect/imx/imx8mn.c new file mode 100644 index 000000000000..ad97e55fd4e5 --- /dev/null +++ b/drivers/interconnect/imx/imx8mn.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Interconnect framework driver for i.MX8MN SoC + * + * Copyright (c) 2019-2020, NXP + */ + +#include +#include +#include + +#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 "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3