Add a platform driver for the i.MX8MQ SoC describing bus topology,
based on internal documentation.
Signed-off-by: Leonard Crestez <leonard.crestez@xxxxxxx>
Tested-by: Martin Kepplinger <martin.kepplinger@xxxxxxx>
---
drivers/interconnect/imx/Kconfig | 4 +
drivers/interconnect/imx/Makefile | 2 +
drivers/interconnect/imx/imx8mq.c | 103 ++++++++++++++++++++++
include/dt-bindings/interconnect/imx8mq.h | 48 ++++++++++
4 files changed, 157 insertions(+)
create mode 100644 drivers/interconnect/imx/imx8mq.c
create mode 100644 include/dt-bindings/interconnect/imx8mq.h
diff --git a/drivers/interconnect/imx/Kconfig b/drivers/interconnect/imx/Kconfig
index 2cd4fad4976a..a2e6127f25b7 100644
--- a/drivers/interconnect/imx/Kconfig
+++ b/drivers/interconnect/imx/Kconfig
@@ -5,5 +5,9 @@ config INTERCONNECT_IMX
Generic interconnect drivers for i.MX SOCs
config INTERCONNECT_IMX8MM
tristate "i.MX8MM 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 c234e5d3dfd1..e7d7e029d6c7 100644
--- a/drivers/interconnect/imx/Makefile
+++ b/drivers/interconnect/imx/Makefile
@@ -1,5 +1,7 @@
imx-interconnect-objs := imx.o
imx8mm-interconnect-objs := imx8mm.o
+imx8mq-interconnect-objs := imx8mq.o
obj-$(CONFIG_INTERCONNECT_IMX) += imx-interconnect.o
obj-$(CONFIG_INTERCONNECT_IMX8MM) += imx8mm-interconnect.o
+obj-$(CONFIG_INTERCONNECT_IMX8MQ) += imx8mq-interconnect.o
diff --git a/drivers/interconnect/imx/imx8mq.c b/drivers/interconnect/imx/imx8mq.c
new file mode 100644
index 000000000000..ba43a15aefec
--- /dev/null
+++ b/drivers/interconnect/imx/imx8mq.c
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Interconnect framework driver for i.MX8MQ SoC
+ *
+ * Copyright (c) 2019-2020, NXP
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/imx8mq.h>
+
+#include "imx.h"
+
+static const struct imx_icc_node_adj_desc imx8mq_dram_adj = {
+ .bw_mul = 1,
+ .bw_div = 4,
+ .phandle_name = "fsl,ddrc",
+};
+
+static const struct imx_icc_node_adj_desc imx8mq_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", IMX8MQ_ICN_NOC, &imx8mq_noc_adj,
+ IMX8MQ_ICS_DRAM, IMX8MQ_ICN_MAIN),
+
+ DEFINE_BUS_SLAVE("DRAM", IMX8MQ_ICS_DRAM, &imx8mq_dram_adj),
+ DEFINE_BUS_SLAVE("OCRAM", IMX8MQ_ICS_OCRAM, NULL),
+ DEFINE_BUS_MASTER("A53", IMX8MQ_ICM_A53, IMX8MQ_ICN_NOC),
+
+ /* VPUMIX */
+ DEFINE_BUS_MASTER("VPU", IMX8MQ_ICM_VPU, IMX8MQ_ICN_VIDEO),
+ DEFINE_BUS_INTERCONNECT("PL301_VIDEO", IMX8MQ_ICN_VIDEO, NULL, IMX8MQ_ICN_NOC),
+
+ /* GPUMIX */
+ DEFINE_BUS_MASTER("GPU", IMX8MQ_ICM_GPU, IMX8MQ_ICN_GPU),
+ DEFINE_BUS_INTERCONNECT("PL301_GPU", IMX8MQ_ICN_GPU, NULL, IMX8MQ_ICN_NOC),
+
+ /* DISPMIX (only for DCSS) */
+ DEFINE_BUS_MASTER("DC", IMX8MQ_ICM_DCSS, IMX8MQ_ICN_DCSS),
+ DEFINE_BUS_INTERCONNECT("PL301_DC", IMX8MQ_ICN_DCSS, NULL, IMX8MQ_ICN_NOC),
+
+ /* USBMIX */
+ DEFINE_BUS_MASTER("USB1", IMX8MQ_ICM_USB1, IMX8MQ_ICN_USB),
+ DEFINE_BUS_MASTER("USB2", IMX8MQ_ICM_USB2, IMX8MQ_ICN_USB),
+ DEFINE_BUS_INTERCONNECT("PL301_USB", IMX8MQ_ICN_USB, NULL, IMX8MQ_ICN_NOC),
+
+ /* PL301_DISPLAY (IPs other than DCSS, inside SUPERMIX) */
+ DEFINE_BUS_MASTER("CSI1", IMX8MQ_ICM_CSI1, IMX8MQ_ICN_DISPLAY),
+ DEFINE_BUS_MASTER("CSI2", IMX8MQ_ICM_CSI2, IMX8MQ_ICN_DISPLAY),
+ DEFINE_BUS_MASTER("LCDIF", IMX8MQ_ICM_LCDIF, IMX8MQ_ICN_DISPLAY),
+ DEFINE_BUS_INTERCONNECT("PL301_DISPLAY", IMX8MQ_ICN_DISPLAY, NULL, IMX8MQ_ICN_MAIN),
+
+ /* AUDIO */
+ DEFINE_BUS_MASTER("SDMA2", IMX8MQ_ICM_SDMA2, IMX8MQ_ICN_AUDIO),
+ DEFINE_BUS_INTERCONNECT("PL301_AUDIO", IMX8MQ_ICN_AUDIO, NULL, IMX8MQ_ICN_DISPLAY),
+
+ /* ENET */
+ DEFINE_BUS_MASTER("ENET", IMX8MQ_ICM_ENET, IMX8MQ_ICN_ENET),
+ DEFINE_BUS_INTERCONNECT("PL301_ENET", IMX8MQ_ICN_ENET, NULL, IMX8MQ_ICN_MAIN),
+
+ /* OTHER */
+ DEFINE_BUS_MASTER("SDMA1", IMX8MQ_ICM_SDMA1, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_MASTER("NAND", IMX8MQ_ICM_NAND, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_MASTER("USDHC1", IMX8MQ_ICM_USDHC1, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_MASTER("USDHC2", IMX8MQ_ICM_USDHC2, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_MASTER("PCIE1", IMX8MQ_ICM_PCIE1, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_MASTER("PCIE2", IMX8MQ_ICM_PCIE2, IMX8MQ_ICN_MAIN),
+ DEFINE_BUS_INTERCONNECT("PL301_MAIN", IMX8MQ_ICN_MAIN, NULL,
+ IMX8MQ_ICN_NOC, IMX8MQ_ICS_OCRAM),
+};
+
+static int imx8mq_icc_probe(struct platform_device *pdev)
+{
+ return imx_icc_register(pdev, nodes, ARRAY_SIZE(nodes));
+}
+
+static int imx8mq_icc_remove(struct platform_device *pdev)
+{
+ return imx_icc_unregister(pdev);
+}
+
+static struct platform_driver imx8mq_icc_driver = {
+ .probe = imx8mq_icc_probe,
+ .remove = imx8mq_icc_remove,
+ .driver = {
+ .name = "imx8mq-interconnect",
+ },
+};
+
+module_platform_driver(imx8mq_icc_driver);
+MODULE_ALIAS("platform:imx8mq-interconnect");
+MODULE_AUTHOR("Leonard Crestez <leonard.crestez@xxxxxxx>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/dt-bindings/interconnect/imx8mq.h b/include/dt-bindings/interconnect/imx8mq.h
new file mode 100644
index 000000000000..1a4cae7f8be2
--- /dev/null
+++ b/include/dt-bindings/interconnect/imx8mq.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Interconnect framework driver for i.MX SoC
+ *
+ * Copyright (c) 2019-2020, NXP
+ */
+
+#ifndef __DT_BINDINGS_INTERCONNECT_IMX8MQ_H
+#define __DT_BINDINGS_INTERCONNECT_IMX8MQ_H
+
+#define IMX8MQ_ICN_NOC 1
+#define IMX8MQ_ICS_DRAM 2
+#define IMX8MQ_ICS_OCRAM 3
+#define IMX8MQ_ICM_A53 4
+
+#define IMX8MQ_ICM_VPU 5
+#define IMX8MQ_ICN_VIDEO 6
+
+#define IMX8MQ_ICM_GPU 7
+#define IMX8MQ_ICN_GPU 8
+
+#define IMX8MQ_ICM_DCSS 9
+#define IMX8MQ_ICN_DCSS 10
+
+#define IMX8MQ_ICM_USB1 11
+#define IMX8MQ_ICM_USB2 12
+#define IMX8MQ_ICN_USB 13
+
+#define IMX8MQ_ICM_CSI1 14
+#define IMX8MQ_ICM_CSI2 15
+#define IMX8MQ_ICM_LCDIF 16
+#define IMX8MQ_ICN_DISPLAY 17
+
+#define IMX8MQ_ICM_SDMA2 18
+#define IMX8MQ_ICN_AUDIO 19
+
+#define IMX8MQ_ICN_ENET 20
+#define IMX8MQ_ICM_ENET 21
+
+#define IMX8MQ_ICM_SDMA1 22
+#define IMX8MQ_ICM_NAND 23
+#define IMX8MQ_ICM_USDHC1 24
+#define IMX8MQ_ICM_USDHC2 25
+#define IMX8MQ_ICM_PCIE1 26
+#define IMX8MQ_ICM_PCIE2 27
+#define IMX8MQ_ICN_MAIN 28
+
+#endif /* __DT_BINDINGS_INTERCONNECT_IMX8MQ_H */
--
2.17.1
