Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

7 files changed, 1100 insertions, 0 deletions

diff --git a/drivers/interconnect/mediatek/Kconfig b/drivers/interconnect/mediatek/Kconfig
new file mode 100644
index 000000000..9fd3f2170
--- /dev/null
+++ b/drivers/interconnect/mediatek/Kconfig
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config INTERCONNECT_MTK
+	bool "MediaTek interconnect drivers"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
+	help
+	  Support for MediaTek's bus interconnect hardware.
+
+config INTERCONNECT_MTK_DVFSRC_EMI
+	tristate "MediaTek DVFSRC EMI interconnect driver"
+	depends on INTERCONNECT_MTK && MTK_DVFSRC
+	help
+	  This is a driver for the MediaTek External Memory Interface
+	  interconnect on SoCs equipped with the integrated Dynamic
+	  Voltage Frequency Scaling Resource Collector (DVFSRC) MCU
+
+config INTERCONNECT_MTK_MT8183
+	tristate "MediaTek MT8183 interconnect driver"
+	depends on INTERCONNECT_MTK_DVFSRC_EMI
+	help
+	  This is a driver for the MediaTek bus interconnect on MT8183-based
+	  platforms.
+
+config INTERCONNECT_MTK_MT8195
+	tristate "MediaTek MT8195 interconnect driver"
+	depends on INTERCONNECT_MTK_DVFSRC_EMI
+	help
+	  This is a driver for the MediaTek bus interconnect on MT8195-based
+	  platforms.
+
+config INTERCONNECT_MTK_MT8196
+	tristate "MediaTek MT8196 interconnect driver"
+	depends on INTERCONNECT_MTK_DVFSRC_EMI
+	help
+	  This is a driver for the MediaTek bus interconnect on MT8196-based
+	  platforms.
diff --git a/drivers/interconnect/mediatek/Makefile b/drivers/interconnect/mediatek/Makefile
new file mode 100644
index 000000000..6bd656668
--- /dev/null
+++ b/drivers/interconnect/mediatek/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_INTERCONNECT_MTK_DVFSRC_EMI) += icc-emi.o
+obj-$(CONFIG_INTERCONNECT_MTK_MT8183) += mt8183.o
+obj-$(CONFIG_INTERCONNECT_MTK_MT8195) += mt8195.o
+obj-$(CONFIG_INTERCONNECT_MTK_MT8195) += mt8196.o
diff --git a/drivers/interconnect/mediatek/icc-emi.c b/drivers/interconnect/mediatek/icc-emi.c
new file mode 100644
index 000000000..dfa3a9cd9
--- /dev/null
+++ b/drivers/interconnect/mediatek/icc-emi.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MediaTek External Memory Interface (EMI) Interconnect driver
+ *
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/overflow.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/dvfsrc.h>
+
+#include "icc-emi.h"
+
+static int mtk_emi_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
+				 u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
+{
+	struct mtk_icc_node *in = node->data;
+
+	if (check_add_overflow(*agg_avg, avg_bw, agg_avg))
+		*agg_avg = U32_MAX;
+
+	*agg_peak = max_t(u32, *agg_peak, peak_bw);
+
+	in->sum_avg = *agg_avg;
+	in->max_peak = *agg_peak;
+
+	return 0;
+}
+
+static int mtk_emi_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+	struct mtk_icc_node *node = dst->data;
+	struct device *dev;
+	int ret;
+
+	if (unlikely(!src->provider))
+		return -EINVAL;
+
+	dev = src->provider->dev->parent;
+
+	switch (node->ep) {
+	case 0:
+		break;
+	case 1:
+		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_PEAK_BW, node->max_peak);
+		if (ret) {
+			dev_err(dev, "Cannot send peak bw request: %d\n", ret);
+			return ret;
+		}
+
+		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_BW, node->sum_avg);
+		if (ret) {
+			dev_err(dev, "Cannot send bw request: %d\n", ret);
+			return ret;
+		}
+		break;
+	case 2:
+		ret = mtk_dvfsrc_send_request(dev, MTK_DVFSRC_CMD_HRT_BW, node->sum_avg);
+		if (ret) {
+			dev_err(dev, "Cannot send HRT bw request: %d\n", ret);
+			return ret;
+		}
+		break;
+	default:
+		dev_err(src->provider->dev, "Unknown endpoint %u\n", node->ep);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int mtk_emi_icc_probe(struct platform_device *pdev)
+{
+	const struct mtk_icc_desc *desc;
+	struct device *dev = &pdev->dev;
+	struct icc_node *node;
+	struct icc_onecell_data *data;
+	struct icc_provider *provider;
+	struct mtk_icc_node **mnodes;
+	int i, j, ret;
+
+	desc = of_device_get_match_data(dev);
+	if (!desc)
+		return -EINVAL;
+
+	mnodes = desc->nodes;
+
+	provider = devm_kzalloc(dev, sizeof(*provider), GFP_KERNEL);
+	if (!provider)
+		return -ENOMEM;
+
+	data = devm_kzalloc(dev, struct_size(data, nodes, desc->num_nodes), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	provider->dev = dev;
+	provider->set = mtk_emi_icc_set;
+	provider->aggregate = mtk_emi_icc_aggregate;
+	provider->xlate = of_icc_xlate_onecell;
+	INIT_LIST_HEAD(&provider->nodes);
+	provider->data = data;
+
+	for (i = 0; i < desc->num_nodes; i++) {
+		if (!mnodes[i])
+			continue;
+
+		node = icc_node_create(mnodes[i]->id);
+		if (IS_ERR(node)) {
+			ret = PTR_ERR(node);
+			goto err;
+		}
+
+		node->name = mnodes[i]->name;
+		node->data = mnodes[i];
+		icc_node_add(node, provider);
+
+		for (j = 0; j < mnodes[i]->num_links; j++)
+			icc_link_create(node, mnodes[i]->links[j]);
+
+		data->nodes[i] = node;
+	}
+	data->num_nodes = desc->num_nodes;
+
+	ret = icc_provider_register(provider);
+	if (ret)
+		goto err;
+
+	platform_set_drvdata(pdev, provider);
+
+	return 0;
+err:
+	icc_nodes_remove(provider);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(mtk_emi_icc_probe);
+
+void mtk_emi_icc_remove(struct platform_device *pdev)
+{
+	struct icc_provider *provider = platform_get_drvdata(pdev);
+
+	icc_provider_deregister(provider);
+	icc_nodes_remove(provider);
+}
+EXPORT_SYMBOL_GPL(mtk_emi_icc_remove);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_AUTHOR("Henry Chen <henryc.chen@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek External Memory Interface interconnect driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/interconnect/mediatek/icc-emi.h b/drivers/interconnect/mediatek/icc-emi.h
new file mode 100644
index 000000000..9512a50db
--- /dev/null
+++ b/drivers/interconnect/mediatek/icc-emi.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#ifndef __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
+#define __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H
+
+/**
+ * struct mtk_icc_node - Mediatek EMI Interconnect Node
+ * @name:      The interconnect node name which is shown in debugfs
+ * @ep:        Type of this endpoint
+ * @id:        Unique node identifier
+ * @sum_avg:   Current sum aggregate value of all average bw requests in kBps
+ * @max_peak:  Current max aggregate value of all peak bw requests in kBps
+ * @num_links: The total number of @links
+ * @links:     Array of @id linked to this node
+ */
+struct mtk_icc_node {
+	unsigned char *name;
+	int ep;
+	u16 id;
+	u64 sum_avg;
+	u64 max_peak;
+
+	u16 num_links;
+	u16 links[] __counted_by(num_links);
+};
+
+struct mtk_icc_desc {
+	struct mtk_icc_node **nodes;
+	size_t num_nodes;
+};
+
+int mtk_emi_icc_probe(struct platform_device *pdev);
+void mtk_emi_icc_remove(struct platform_device *pdev);
+
+#endif /* __DRIVERS_INTERCONNECT_MEDIATEK_ICC_EMI_H */
diff --git a/drivers/interconnect/mediatek/mt8183.c b/drivers/interconnect/mediatek/mt8183.c
new file mode 100644
index 000000000..ed607a8b8
--- /dev/null
+++ b/drivers/interconnect/mediatek/mt8183.c
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <linux/device.h>
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/mediatek,mt8183.h>
+
+#include "icc-emi.h"
+
+static struct mtk_icc_node ddr_emi = {
+	.name = "ddr-emi",
+	.id = SLAVE_DDR_EMI,
+	.ep = 1,
+};
+
+static struct mtk_icc_node mcusys = {
+	.name = "mcusys",
+	.id = MASTER_MCUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node gpu = {
+	.name = "gpu",
+	.id = MASTER_MFG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mmsys = {
+	.name = "mmsys",
+	.id = MASTER_MMSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mm_vpu = {
+	.name = "mm-vpu",
+	.id = MASTER_MM_VPU,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_disp = {
+	.name = "mm-disp",
+	.id = MASTER_MM_DISP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_vdec = {
+	.name = "mm-vdec",
+	.id = MASTER_MM_VDEC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_venc = {
+	.name = "mm-venc",
+	.id = MASTER_MM_VENC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_cam = {
+	.name = "mm-cam",
+	.id = MASTER_MM_CAM,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_img = {
+	.name = "mm-img",
+	.id = MASTER_MM_IMG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_mdp = {
+	.name = "mm-mdp",
+	.id = MASTER_MM_MDP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node *mt8183_emi_icc_nodes[] = {
+	[SLAVE_DDR_EMI] = &ddr_emi,
+	[MASTER_MCUSYS] = &mcusys,
+	[MASTER_MFG] = &gpu,
+	[MASTER_MMSYS] = &mmsys,
+	[MASTER_MM_VPU] = &mm_vpu,
+	[MASTER_MM_DISP] = &mm_disp,
+	[MASTER_MM_VDEC] = &mm_vdec,
+	[MASTER_MM_VENC] = &mm_venc,
+	[MASTER_MM_CAM] = &mm_cam,
+	[MASTER_MM_IMG] = &mm_img,
+	[MASTER_MM_MDP] = &mm_mdp
+};
+
+static const struct mtk_icc_desc mt8183_emi_icc = {
+	.nodes = mt8183_emi_icc_nodes,
+	.num_nodes = ARRAY_SIZE(mt8183_emi_icc_nodes),
+};
+
+static const struct of_device_id mtk_mt8183_emi_icc_of_match[] = {
+	{ .compatible = "mediatek,mt8183-emi", .data = &mt8183_emi_icc },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mtk_mt8183_emi_icc_of_match);
+
+static struct platform_driver mtk_emi_icc_mt8183_driver = {
+	.driver = {
+		.name = "emi-icc-mt8183",
+		.of_match_table = mtk_mt8183_emi_icc_of_match,
+		.sync_state = icc_sync_state,
+	},
+	.probe = mtk_emi_icc_probe,
+	.remove = mtk_emi_icc_remove,
+
+};
+module_platform_driver(mtk_emi_icc_mt8183_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_DESCRIPTION("MediaTek MT8183 EMI ICC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/interconnect/mediatek/mt8195.c b/drivers/interconnect/mediatek/mt8195.c
new file mode 100644
index 000000000..0f0767639
--- /dev/null
+++ b/drivers/interconnect/mediatek/mt8195.c
@@ -0,0 +1,338 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Copyright (c) 2024 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <linux/device.h>
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/mediatek,mt8195.h>
+
+#include "icc-emi.h"
+
+static struct mtk_icc_node ddr_emi = {
+	.name = "ddr-emi",
+	.id = SLAVE_DDR_EMI,
+	.ep = 1,
+};
+
+static struct mtk_icc_node mcusys = {
+	.name = "mcusys",
+	.id = MASTER_MCUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node gpu = {
+	.name = "gpu",
+	.id = MASTER_GPUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mmsys = {
+	.name = "mmsys",
+	.id = MASTER_MMSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mm_vpu = {
+	.name = "mm-vpu",
+	.id = MASTER_MM_VPU,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_disp = {
+	.name = "mm-disp",
+	.id = MASTER_MM_DISP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_vdec = {
+	.name = "mm-vdec",
+	.id = MASTER_MM_VDEC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_venc = {
+	.name = "mm-venc",
+	.id = MASTER_MM_VENC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_cam = {
+	.name = "mm-cam",
+	.id = MASTER_MM_CAM,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_img = {
+	.name = "mm-img",
+	.id = MASTER_MM_IMG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_mdp = {
+	.name = "mm-mdp",
+	.id = MASTER_MM_MDP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node vpusys = {
+	.name = "vpusys",
+	.id = MASTER_VPUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node vpu_port0 = {
+	.name = "vpu-port0",
+	.id = MASTER_VPU_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node vpu_port1 = {
+	.name = "vpu-port1",
+	.id = MASTER_VPU_1,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node mdlasys = {
+	.name = "mdlasys",
+	.id = MASTER_MDLASYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mdla_port0 = {
+	.name = "mdla-port0",
+	.id = MASTER_MDLA_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MDLASYS }
+};
+
+static struct mtk_icc_node ufs = {
+	.name = "ufs",
+	.id = MASTER_UFS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node pcie0 = {
+	.name = "pcie0",
+	.id = MASTER_PCIE_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node pcie1 = {
+	.name = "pcie1",
+	.id = MASTER_PCIE_1,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node usb = {
+	.name = "usb",
+	.id = MASTER_USB,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node wifi = {
+	.name = "wifi",
+	.id = MASTER_WIFI,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node bt = {
+	.name = "bt",
+	.id = MASTER_BT,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node netsys = {
+	.name = "netsys",
+	.id = MASTER_NETSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node dbgif = {
+	.name = "dbgif",
+	.id = MASTER_DBGIF,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_ddr_emi = {
+	.name = "hrt-ddr-emi",
+	.id = SLAVE_HRT_DDR_EMI,
+	.ep = 2,
+};
+
+static struct mtk_icc_node hrt_mmsys = {
+	.name = "hrt-mmsys",
+	.id = MASTER_HRT_MMSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_mm_disp = {
+	.name = "hrt-mm-disp",
+	.id = MASTER_HRT_MM_DISP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_vdec = {
+	.name = "hrt-mm-vdec",
+	.id = MASTER_HRT_MM_VDEC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_venc = {
+	.name = "hrt-mm-venc",
+	.id = MASTER_HRT_MM_VENC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_cam = {
+	.name = "hrt-mm-cam",
+	.id = MASTER_HRT_MM_CAM,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_img = {
+	.name = "hrt-mm-img",
+	.id = MASTER_HRT_MM_IMG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_mdp = {
+	.name = "hrt-mm-mdp",
+	.id = MASTER_HRT_MM_MDP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_dbgif = {
+	.name = "hrt-dbgif",
+	.id = MASTER_HRT_DBGIF,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node *mt8195_emi_icc_nodes[] = {
+	[SLAVE_DDR_EMI] = &ddr_emi,
+	[MASTER_MCUSYS] = &mcusys,
+	[MASTER_GPUSYS] = &gpu,
+	[MASTER_MMSYS] = &mmsys,
+	[MASTER_MM_VPU] = &mm_vpu,
+	[MASTER_MM_DISP] = &mm_disp,
+	[MASTER_MM_VDEC] = &mm_vdec,
+	[MASTER_MM_VENC] = &mm_venc,
+	[MASTER_MM_CAM] = &mm_cam,
+	[MASTER_MM_IMG] = &mm_img,
+	[MASTER_MM_MDP] = &mm_mdp,
+	[MASTER_VPUSYS] = &vpusys,
+	[MASTER_VPU_0] = &vpu_port0,
+	[MASTER_VPU_1] = &vpu_port1,
+	[MASTER_MDLASYS] = &mdlasys,
+	[MASTER_MDLA_0] = &mdla_port0,
+	[MASTER_UFS] = &ufs,
+	[MASTER_PCIE_0] = &pcie0,
+	[MASTER_PCIE_1] = &pcie1,
+	[MASTER_USB] = &usb,
+	[MASTER_WIFI] = &wifi,
+	[MASTER_BT] = &bt,
+	[MASTER_NETSYS] = &netsys,
+	[MASTER_DBGIF] = &dbgif,
+	[SLAVE_HRT_DDR_EMI] = &hrt_ddr_emi,
+	[MASTER_HRT_MMSYS] = &hrt_mmsys,
+	[MASTER_HRT_MM_DISP] = &hrt_mm_disp,
+	[MASTER_HRT_MM_VDEC] = &hrt_mm_vdec,
+	[MASTER_HRT_MM_VENC] = &hrt_mm_venc,
+	[MASTER_HRT_MM_CAM] = &hrt_mm_cam,
+	[MASTER_HRT_MM_IMG] = &hrt_mm_img,
+	[MASTER_HRT_MM_MDP] = &hrt_mm_mdp,
+	[MASTER_HRT_DBGIF] = &hrt_dbgif
+};
+
+static struct mtk_icc_desc mt8195_emi_icc = {
+	.nodes = mt8195_emi_icc_nodes,
+	.num_nodes = ARRAY_SIZE(mt8195_emi_icc_nodes),
+};
+
+static const struct of_device_id mtk_mt8195_emi_icc_of_match[] = {
+	{ .compatible = "mediatek,mt8195-emi", .data = &mt8195_emi_icc },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mtk_mt8195_emi_icc_of_match);
+
+static struct platform_driver mtk_emi_icc_mt8195_driver = {
+	.driver = {
+		.name = "emi-icc-mt8195",
+		.of_match_table = mtk_mt8195_emi_icc_of_match,
+		.sync_state = icc_sync_state,
+	},
+	.probe = mtk_emi_icc_probe,
+	.remove = mtk_emi_icc_remove,
+
+};
+module_platform_driver(mtk_emi_icc_mt8195_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_DESCRIPTION("MediaTek MT8195 EMI ICC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/interconnect/mediatek/mt8196.c b/drivers/interconnect/mediatek/mt8196.c
new file mode 100644
index 000000000..df5a975f0
--- /dev/null
+++ b/drivers/interconnect/mediatek/mt8196.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025 Collabora Ltd.
+ *                    AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+ */
+
+#include <linux/device.h>
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/interconnect/mediatek,mt8196.h>
+
+#include "icc-emi.h"
+
+static struct mtk_icc_node ddr_emi = {
+	.name = "ddr-emi",
+	.id = SLAVE_DDR_EMI,
+	.ep = 1,
+};
+
+static struct mtk_icc_node mcusys = {
+	.name = "mcusys",
+	.id = MASTER_MCUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mcu_port0 = {
+	.name = "mcu-port0",
+	.id = MASTER_MCU_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mcu_port1 = {
+	.name = "mcu-port1",
+	.id = MASTER_MCU_1,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mcu_port2 = {
+	.name = "mcu-port2",
+	.id = MASTER_MCU_2,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mcu_port3 = {
+	.name = "mcu-port3",
+	.id = MASTER_MCU_3,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mcu_port4 = {
+	.name = "mcu-port4",
+	.id = MASTER_MCU_4,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node gpu = {
+	.name = "gpu",
+	.id = MASTER_GPUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mmsys = {
+	.name = "mmsys",
+	.id = MASTER_MMSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mm_vpu = {
+	.name = "mm-vpu",
+	.id = MASTER_MM_VPU,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_disp = {
+	.name = "mm-disp",
+	.id = MASTER_MM_DISP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_vdec = {
+	.name = "mm-vdec",
+	.id = MASTER_MM_VDEC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_venc = {
+	.name = "mm-venc",
+	.id = MASTER_MM_VENC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_cam = {
+	.name = "mm-cam",
+	.id = MASTER_MM_CAM,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_img = {
+	.name = "mm-img",
+	.id = MASTER_MM_IMG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node mm_mdp = {
+	.name = "mm-mdp",
+	.id = MASTER_MM_MDP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MMSYS }
+};
+
+static struct mtk_icc_node vpusys = {
+	.name = "vpusys",
+	.id = MASTER_VPUSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node vpu_port0 = {
+	.name = "vpu-port0",
+	.id = MASTER_VPU_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node vpu_port1 = {
+	.name = "vpu-port1",
+	.id = MASTER_VPU_1,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_VPUSYS }
+};
+
+static struct mtk_icc_node mdlasys = {
+	.name = "mdlasys",
+	.id = MASTER_MDLASYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node mdla_port0 = {
+	.name = "mdla-port0",
+	.id = MASTER_MDLA_0,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_MDLASYS }
+};
+
+static struct mtk_icc_node ufs = {
+	.name = "ufs",
+	.id = MASTER_UFS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node pcie = {
+	.name = "pcie",
+	.id = MASTER_PCIE,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node usb = {
+	.name = "usb",
+	.id = MASTER_USB,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node wifi = {
+	.name = "wifi",
+	.id = MASTER_WIFI,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node bt = {
+	.name = "bt",
+	.id = MASTER_BT,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node netsys = {
+	.name = "netsys",
+	.id = MASTER_NETSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node dbgif = {
+	.name = "dbgif",
+	.id = MASTER_DBGIF,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_ddr_emi = {
+	.name = "hrt-ddr-emi",
+	.id = SLAVE_HRT_DDR_EMI,
+	.ep = 2,
+};
+
+static struct mtk_icc_node hrt_mmsys = {
+	.name = "hrt-mmsys",
+	.id = MASTER_HRT_MMSYS,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_mm_disp = {
+	.name = "hrt-mm-disp",
+	.id = MASTER_HRT_MM_DISP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_vdec = {
+	.name = "hrt-mm-vdec",
+	.id = MASTER_HRT_MM_VDEC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_venc = {
+	.name = "hrt-mm-venc",
+	.id = MASTER_HRT_MM_VENC,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_cam = {
+	.name = "hrt-mm-cam",
+	.id = MASTER_HRT_MM_CAM,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_img = {
+	.name = "hrt-mm-img",
+	.id = MASTER_HRT_MM_IMG,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_mm_mdp = {
+	.name = "hrt-mm-mdp",
+	.id = MASTER_HRT_MM_MDP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { MASTER_HRT_MMSYS }
+};
+
+static struct mtk_icc_node hrt_adsp = {
+	.name = "hrt-adsp",
+	.id = MASTER_HRT_ADSP,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node hrt_dbgif = {
+	.name = "hrt-dbgif",
+	.id = MASTER_HRT_DBGIF,
+	.ep = 0,
+	.num_links = 1,
+	.links = { SLAVE_HRT_DDR_EMI }
+};
+
+static struct mtk_icc_node *mt8196_emi_icc_nodes[] = {
+	[SLAVE_DDR_EMI] = &ddr_emi,
+	[MASTER_MCUSYS] = &mcusys,
+	[MASTER_MCU_0] = &mcu_port0,
+	[MASTER_MCU_1] = &mcu_port1,
+	[MASTER_MCU_2] = &mcu_port2,
+	[MASTER_MCU_3] = &mcu_port3,
+	[MASTER_MCU_4] = &mcu_port4,
+	[MASTER_GPUSYS] = &gpu,
+	[MASTER_MMSYS] = &mmsys,
+	[MASTER_MM_VPU] = &mm_vpu,
+	[MASTER_MM_DISP] = &mm_disp,
+	[MASTER_MM_VDEC] = &mm_vdec,
+	[MASTER_MM_VENC] = &mm_venc,
+	[MASTER_MM_CAM] = &mm_cam,
+	[MASTER_MM_IMG] = &mm_img,
+	[MASTER_MM_MDP] = &mm_mdp,
+	[MASTER_VPUSYS] = &vpusys,
+	[MASTER_VPU_0] = &vpu_port0,
+	[MASTER_VPU_1] = &vpu_port1,
+	[MASTER_MDLASYS] = &mdlasys,
+	[MASTER_MDLA_0] = &mdla_port0,
+	[MASTER_UFS] = &ufs,
+	[MASTER_PCIE] = &pcie,
+	[MASTER_USB] = &usb,
+	[MASTER_WIFI] = &wifi,
+	[MASTER_BT] = &bt,
+	[MASTER_NETSYS] = &netsys,
+	[MASTER_DBGIF] = &dbgif,
+	[SLAVE_HRT_DDR_EMI] = &hrt_ddr_emi,
+	[MASTER_HRT_MMSYS] = &hrt_mmsys,
+	[MASTER_HRT_MM_DISP] = &hrt_mm_disp,
+	[MASTER_HRT_MM_VDEC] = &hrt_mm_vdec,
+	[MASTER_HRT_MM_VENC] = &hrt_mm_venc,
+	[MASTER_HRT_MM_CAM] = &hrt_mm_cam,
+	[MASTER_HRT_MM_IMG] = &hrt_mm_img,
+	[MASTER_HRT_MM_MDP] = &hrt_mm_mdp,
+	[MASTER_HRT_ADSP] = &hrt_adsp,
+	[MASTER_HRT_DBGIF] = &hrt_dbgif
+};
+
+static struct mtk_icc_desc mt8196_emi_icc = {
+	.nodes = mt8196_emi_icc_nodes,
+	.num_nodes = ARRAY_SIZE(mt8196_emi_icc_nodes),
+};
+
+static const struct of_device_id mtk_mt8196_emi_icc_of_match[] = {
+	{ .compatible = "mediatek,mt8196-emi", .data = &mt8196_emi_icc },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mtk_mt8196_emi_icc_of_match);
+
+static struct platform_driver mtk_emi_icc_mt8196_driver = {
+	.driver = {
+		.name = "emi-icc-mt8196",
+		.of_match_table = mtk_mt8196_emi_icc_of_match,
+		.sync_state = icc_sync_state,
+	},
+	.probe = mtk_emi_icc_probe,
+	.remove = mtk_emi_icc_remove,
+
+};
+module_platform_driver(mtk_emi_icc_mt8196_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_DESCRIPTION("MediaTek MT8196 EMI ICC driver");
+MODULE_LICENSE("GPL");