Tegra234 Memory interconnect support

index 9082b6c3763d..983455b1f98d 100644
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/sort.h>
+#include <linux/tegra-icc.h>
 
 #include <soc/tegra/fuse.h>
 

@@ -792,6 +793,8 @@ static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
 	mc->provider.data = &mc->provider;
 	mc->provider.set = mc->soc->icc_ops->set;
 	mc->provider.aggregate = mc->soc->icc_ops->aggregate;
+	mc->provider.get_bw = mc->soc->icc_ops->get_bw;
+	mc->provider.xlate = mc->soc->icc_ops->xlate;
 	mc->provider.xlate_extended = mc->soc->icc_ops->xlate_extended;
 
 	icc_provider_init(&mc->provider);

@@ -824,6 +827,8 @@ static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
 		err = icc_link_create(node, TEGRA_ICC_MC);
 		if (err)
 			goto remove_nodes;
+
+		node->data = (struct tegra_mc_client *)&(mc->soc->clients[i]);
 	}
 
 	err = icc_provider_register(&mc->provider);

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index 51a2263e1bc5..900d88b26fae 100644
@@ -13,6 +13,7 @@
 #include <linux/irq.h>
 #include <linux/reset-controller.h>
 #include <linux/types.h>
+#include <linux/tegra-icc.h>
 
 struct clk;
 struct device;

@@ -26,6 +27,8 @@ struct tegra_mc_timing {
 
 struct tegra_mc_client {
 	unsigned int id;
+	unsigned int bpmp_id;
+	enum tegra_icc_client_type type;
 	const char *name;
 	/*
 	 * For Tegra210 and earlier, this is the SWGROUP ID used for IOVA translations in the

@@ -166,8 +169,10 @@ struct tegra_mc_icc_ops {
 	int (*set)(struct icc_node *src, struct icc_node *dst);
 	int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw,
 			 u32 peak_bw, u32 *agg_avg, u32 *agg_peak);
+	struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data);
 	struct icc_node_data *(*xlate_extended)(struct of_phandle_args *spec,
 						void *data);
+	int (*get_bw)(struct icc_node *node, u32 *avg, u32 *peak);
 };
 
 struct tegra_mc_ops {

@@ -214,6 +219,7 @@ struct tegra_mc_soc {
 };
 
 struct tegra_mc {
+	struct tegra_bpmp *bpmp;
 	struct device *dev;
 	struct tegra_smmu *smmu;
 	struct gart_device *gart;

@@ -229,6 +235,7 @@ struct tegra_mc {
 	struct tegra_mc_timing *timings;
 	unsigned int num_timings;
 
+	bool bwmgr_mrq_supported;
 	struct reset_controller_dev reset;
 
 	struct icc_provider provider;

index 56d911926d54..a4ea181e1090 100644
@@ -14,6 +14,30 @@
 
 static const struct tegra_mc_client tegra234_mc_clients[] = {
 	{
+		.id = TEGRA234_MEMORY_CLIENT_HDAR,
+		.name = "hdar",
+		.bpmp_id = TEGRA_ICC_BPMP_HDA,
+		.type = TEGRA_ICC_ISO_AUDIO,
+		.sid = TEGRA234_SID_HDA,
+		.regs = {
+			.sid = {
+				.override = 0xa8,
+				.security = 0xac,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_HDAW,
+		.name = "hdaw",
+		.bpmp_id = TEGRA_ICC_BPMP_HDA,
+		.type = TEGRA_ICC_ISO_AUDIO,
+		.sid = TEGRA234_SID_HDA,
+		.regs = {
+			.sid = {
+				.override = 0x1a8,
+				.security = 0x1ac,
+			},
+		},
+	}, {
 		.id = TEGRA234_MEMORY_CLIENT_MGBEARD,
 		.name = "mgbeard",
 		.bpmp_id = TEGRA_ICC_BPMP_EQOS,

@@ -133,6 +157,90 @@ static const struct tegra_mc_client tegra234_mc_clients[] = {
 				.security = 0x33c,
 			},
 		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_VI2W,
+		.name = "vi2w",
+		.bpmp_id = TEGRA_ICC_BPMP_VI2,
+		.type = TEGRA_ICC_ISO_VI,
+		.sid = TEGRA234_SID_ISO_VI2,
+		.regs = {
+			.sid = {
+				.override = 0x380,
+				.security = 0x384,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_VI2FALR,
+		.name = "vi2falr",
+		.bpmp_id = TEGRA_ICC_BPMP_VI2FAL,
+		.type = TEGRA_ICC_ISO_VIFAL,
+		.sid = TEGRA234_SID_ISO_VI2FALC,
+		.regs = {
+			.sid = {
+				.override = 0x388,
+				.security = 0x38c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_VI2FALW,
+		.name = "vi2falw",
+		.bpmp_id = TEGRA_ICC_BPMP_VI2FAL,
+		.type = TEGRA_ICC_ISO_VIFAL,
+		.sid = TEGRA234_SID_ISO_VI2FALC,
+		.regs = {
+			.sid = {
+				.override = 0x3e0,
+				.security = 0x3e4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_APER,
+		.name = "aper",
+		.bpmp_id = TEGRA_ICC_BPMP_APE,
+		.type = TEGRA_ICC_ISO_AUDIO,
+		.sid = TEGRA234_SID_APE,
+		.regs = {
+			.sid = {
+				.override = 0x3d0,
+				.security = 0x3d4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_APEW,
+		.name = "apew",
+		.bpmp_id = TEGRA_ICC_BPMP_APE,
+		.type = TEGRA_ICC_ISO_AUDIO,
+		.sid = TEGRA234_SID_APE,
+		.regs = {
+			.sid = {
+				.override = 0x3d8,
+				.security = 0x3dc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_NVDISPLAYR,
+		.name = "nvdisplayr",
+		.bpmp_id = TEGRA_ICC_BPMP_DISPLAY,
+		.type = TEGRA_ICC_ISO_DISPLAY,
+		.sid = TEGRA234_SID_ISO_NVDISPLAY,
+		.regs = {
+			.sid = {
+				.override = 0x490,
+				.security = 0x494,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_NVDISPLAYR1,
+		.name = "nvdisplayr1",
+		.bpmp_id = TEGRA_ICC_BPMP_DISPLAY,
+		.type = TEGRA_ICC_ISO_DISPLAY,
+		.sid = TEGRA234_SID_ISO_NVDISPLAY,
+		.regs = {
+			.sid = {
+				.override = 0x508,
+				.security = 0x50c,
+			},
+		},
 	}, {
 		.id = TEGRA234_MEMORY_CLIENT_BPMPR,
 		.name = "bpmpr",

@@ -357,6 +465,318 @@ static const struct tegra_mc_client tegra234_mc_clients[] = {
 				.security = 0x37c,
 			},
 		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE0R,
+		.name = "pcie0r",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_0,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE0,
+		.regs = {
+			.sid = {
+				.override = 0x6c0,
+				.security = 0x6c4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE0W,
+		.name = "pcie0w",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_0,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE0,
+		.regs = {
+			.sid = {
+				.override = 0x6c8,
+				.security = 0x6cc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE1R,
+		.name = "pcie1r",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_1,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE1,
+		.regs = {
+			.sid = {
+				.override = 0x6d0,
+				.security = 0x6d4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE1W,
+		.name = "pcie1w",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_1,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE1,
+		.regs = {
+			.sid = {
+				.override = 0x6d8,
+				.security = 0x6dc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE2AR,
+		.name = "pcie2ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_2,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE2,
+		.regs = {
+			.sid = {
+				.override = 0x6e0,
+				.security = 0x6e4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE2AW,
+		.name = "pcie2aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_2,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE2,
+		.regs = {
+			.sid = {
+				.override = 0x6e8,
+				.security = 0x6ec,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE3R,
+		.name = "pcie3r",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_3,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE3,
+		.regs = {
+			.sid = {
+				.override = 0x6f0,
+				.security = 0x6f4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE3W,
+		.name = "pcie3w",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_3,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE3,
+		.regs = {
+			.sid = {
+				.override = 0x6f8,
+				.security = 0x6fc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE4R,
+		.name = "pcie4r",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_4,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE4,
+		.regs = {
+			.sid = {
+				.override = 0x700,
+				.security = 0x704,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE4W,
+		.name = "pcie4w",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_4,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE4,
+		.regs = {
+			.sid = {
+				.override = 0x708,
+				.security = 0x70c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE5R,
+		.name = "pcie5r",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_5,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE5,
+		.regs = {
+			.sid = {
+				.override = 0x710,
+				.security = 0x714,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE5W,
+		.name = "pcie5w",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_5,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE5,
+		.regs = {
+			.sid = {
+				.override = 0x718,
+				.security = 0x71c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE5R1,
+		.name = "pcie5r1",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_5,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE5,
+		.regs = {
+			.sid = {
+				.override = 0x778,
+				.security = 0x77c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE6AR,
+		.name = "pcie6ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_6,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE6,
+		.regs = {
+			.sid = {
+				.override = 0x140,
+				.security = 0x144,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE6AW,
+		.name = "pcie6aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_6,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE6,
+		.regs = {
+			.sid = {
+				.override = 0x148,
+				.security = 0x14c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE6AR1,
+		.name = "pcie6ar1",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_6,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE6,
+		.regs = {
+			.sid = {
+				.override = 0x1e8,
+				.security = 0x1ec,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE7AR,
+		.name = "pcie7ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_7,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE7,
+		.regs = {
+			.sid = {
+				.override = 0x150,
+				.security = 0x154,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE7AW,
+		.name = "pcie7aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_7,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE7,
+		.regs = {
+			.sid = {
+				.override = 0x180,
+				.security = 0x184,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE7AR1,
+		.name = "pcie7ar1",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_7,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE7,
+		.regs = {
+			.sid = {
+				.override = 0x248,
+				.security = 0x24c,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE8AR,
+		.name = "pcie8ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_8,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE8,
+		.regs = {
+			.sid = {
+				.override = 0x190,
+				.security = 0x194,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE8AW,
+		.name = "pcie8aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_8,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE8,
+		.regs = {
+			.sid = {
+				.override = 0x1d8,
+				.security = 0x1dc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE9AR,
+		.name = "pcie9ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_9,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE9,
+		.regs = {
+			.sid = {
+				.override = 0x1e0,
+				.security = 0x1e4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE9AW,
+		.name = "pcie9aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_9,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE9,
+		.regs = {
+			.sid = {
+				.override = 0x1f0,
+				.security = 0x1f4,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE10AR,
+		.name = "pcie10ar",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_10,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE10,
+		.regs = {
+			.sid = {
+				.override = 0x1f8,
+				.security = 0x1fc,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE10AW,
+		.name = "pcie10aw",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_10,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE10,
+		.regs = {
+			.sid = {
+				.override = 0x200,
+				.security = 0x204,
+			},
+		},
+	}, {
+		.id = TEGRA234_MEMORY_CLIENT_PCIE10AR1,
+		.name = "pcie10ar1",
+		.bpmp_id = TEGRA_ICC_BPMP_PCIE_10,
+		.type = TEGRA_ICC_NISO,
+		.sid = TEGRA234_SID_PCIE10,
+		.regs = {
+			.sid = {
+				.override = 0x240,
+				.security = 0x244,
+			},
+		},
 	},
 };
 

index a4ea181e1090..0fa68862749f 100644
@@ -777,6 +777,21 @@ static const struct tegra_mc_client tegra234_mc_clients[] = {
 				.security = 0x244,
 			},
 		},
+	}, {
+		.id = TEGRA_ICC_MC_CPU_CLUSTER0,
+		.name = "sw_cluster0",
+		.bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER0,
+		.type = TEGRA_ICC_NISO,
+	}, {
+		.id = TEGRA_ICC_MC_CPU_CLUSTER1,
+		.name = "sw_cluster1",
+		.bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER1,
+		.type = TEGRA_ICC_NISO,
+	}, {
+		.id = TEGRA_ICC_MC_CPU_CLUSTER2,
+		.name = "sw_cluster2",
+		.bpmp_id = TEGRA_ICC_BPMP_CPU_CLUSTER2,
+		.type = TEGRA_ICC_NISO,
 	},
 };
 

index 347e55e89a2a..6e60d55491b3 100644
@@ -536,4 +536,9 @@
 #define TEGRA234_MEMORY_CLIENT_NVJPG1SRD 0x123
 #define TEGRA234_MEMORY_CLIENT_NVJPG1SWR 0x124
 
+/* ICC ID's for dummy MC clients used to represent CPU Clusters */
+#define TEGRA_ICC_MC_CPU_CLUSTER0       1003
+#define TEGRA_ICC_MC_CPU_CLUSTER1       1004
+#define TEGRA_ICC_MC_CPU_CLUSTER2       1005
+
 #endif

index 983455b1f98d..4a750da1c12a 100644
@@ -843,6 +843,23 @@ static int tegra_mc_interconnect_setup(struct tegra_mc *mc)
 	return err;
 }
 
+static void tegra_mc_num_channel_enabled(struct tegra_mc *mc)
+{
+	unsigned int i;
+	u32 value;
+
+	value = mc_ch_readl(mc, 0, MC_EMEM_ADR_CFG_CHANNEL_ENABLE);
+	if (value <= 0) {
+		mc->num_channels = mc->soc->num_channels;
+		return;
+	}
+
+	for (i = 0; i < 32; i++) {
+		if (value & BIT(i))
+			mc->num_channels++;
+	}
+}
+
 static int tegra_mc_probe(struct platform_device *pdev)
 {
 	struct tegra_mc *mc;

@@ -881,6 +898,8 @@ static int tegra_mc_probe(struct platform_device *pdev)
 			return err;
 	}
 
+	tegra_mc_num_channel_enabled(mc);
+
 	if (mc->soc->ops && mc->soc->ops->handle_irq) {
 		mc->irq = platform_get_irq(pdev, 0);
 		if (mc->irq < 0)

index bc01586b6560..c3f6655bec60 100644
@@ -53,6 +53,7 @@
 #define MC_ERR_ROUTE_SANITY_ADR				0x9c4
 #define MC_ERR_GENERALIZED_CARVEOUT_STATUS		0xc00
 #define MC_ERR_GENERALIZED_CARVEOUT_ADR			0xc04
+#define MC_EMEM_ADR_CFG_CHANNEL_ENABLE			0xdf8
 #define MC_GLOBAL_INTSTATUS				0xf24
 #define MC_ERR_ADR_HI					0x11fc
 

index 0fa68862749f..8e873a7bc34f 100644
@@ -867,6 +867,28 @@ static int tegra234_mc_icc_set(struct icc_node *src, struct icc_node *dst)
 	return ret;
 }
 
+static int tegra234_mc_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
+				     u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
+{
+	struct icc_provider *p = node->provider;
+	struct tegra_mc *mc = icc_provider_to_tegra_mc(p);
+
+	if (!mc->bwmgr_mrq_supported)
+		return -EINVAL;
+
+	if (node->id == TEGRA_ICC_MC_CPU_CLUSTER0 ||
+	    node->id == TEGRA_ICC_MC_CPU_CLUSTER1 ||
+	    node->id == TEGRA_ICC_MC_CPU_CLUSTER2) {
+		if (mc)
+			peak_bw = peak_bw * mc->num_channels;
+	}
+
+	*agg_avg += avg_bw;
+	*agg_peak = max(*agg_peak, peak_bw);
+
+	return 0;
+}
+
 static struct icc_node*
 tegra234_mc_of_icc_xlate(struct of_phandle_args *spec, void *data)
 {

@@ -898,7 +920,7 @@ static int tegra234_mc_icc_get_init_bw(struct icc_node *node, u32 *avg, u32 *pea
 
 static const struct tegra_mc_icc_ops tegra234_mc_icc_ops = {
 	.xlate = tegra234_mc_of_icc_xlate,
-	.aggregate = icc_std_aggregate,
+	.aggregate = tegra234_mc_icc_aggregate,
 	.get_bw = tegra234_mc_icc_get_init_bw,
 	.set = tegra234_mc_icc_set,
 };

index 900d88b26fae..fc3001483e62 100644
@@ -234,6 +234,7 @@ struct tegra_mc {
 
 	struct tegra_mc_timing *timings;
 	unsigned int num_timings;
+	unsigned int num_channels;
 
 	bool bwmgr_mrq_supported;
 	struct reset_controller_dev reset;

index 09825b4a075e..e6eec85480ca 100644
@@ -223,6 +223,7 @@
 #define EP_STATE_ENABLED	1
 
 static const unsigned int pcie_gen_freq[] = {
+	GEN1_CORE_CLK_FREQ,	/* PCI_EXP_LNKSTA_CLS == 0; undefined */
 	GEN1_CORE_CLK_FREQ,
 	GEN2_CORE_CLK_FREQ,
 	GEN3_CORE_CLK_FREQ,

@@ -459,7 +460,11 @@ static irqreturn_t tegra_pcie_ep_irq_thread(int irq, void *arg)
 
 	speed = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA) &
 		PCI_EXP_LNKSTA_CLS;
-	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed - 1]);
+
+	if (speed >= ARRAY_SIZE(pcie_gen_freq))
+		speed = 0;
+
+	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed]);
 
 	if (pcie->of_data->has_ltr_req_fix)
 		return IRQ_HANDLED;

@@ -1020,7 +1025,11 @@ static int tegra_pcie_dw_start_link(struct dw_pcie *pci)
 
 	speed = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA) &
 		PCI_EXP_LNKSTA_CLS;
-	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed - 1]);
+
+	if (speed >= ARRAY_SIZE(pcie_gen_freq))
+		speed = 0;
+
+	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed]);
 
 	tegra_pcie_enable_interrupts(pp);
 

index e6eec85480ca..4fdadc7b045f 100644
@@ -14,6 +14,7 @@
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/gpio/consumer.h>
+#include <linux/interconnect.h>
 #include <linux/interrupt.h>
 #include <linux/iopoll.h>
 #include <linux/kernel.h>

@@ -288,6 +289,7 @@ struct tegra_pcie_dw {
 	unsigned int pex_rst_irq;
 	int ep_state;
 	long link_status;
+	struct icc_path *icc_path;
 };
 
 static inline struct tegra_pcie_dw *to_tegra_pcie(struct dw_pcie *pci)

@@ -310,6 +312,27 @@ struct tegra_pcie_soc {
 	enum dw_pcie_device_mode mode;
 };
 
+static void tegra_pcie_icc_set(struct tegra_pcie_dw *pcie)
+{
+	struct dw_pcie *pci = &pcie->pci;
+	u32 val, speed, width;
+
+	val = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA);
+
+	speed = FIELD_GET(PCI_EXP_LNKSTA_CLS, val);
+	width = FIELD_GET(PCI_EXP_LNKSTA_NLW, val);
+
+	val = width * (PCIE_SPEED2MBS_ENC(pcie_link_speed[speed]) / BITS_PER_BYTE);
+
+	if (icc_set_bw(pcie->icc_path, MBps_to_icc(val), 0))
+		dev_err(pcie->dev, "can't set bw[%u]\n", val);
+
+	if (speed >= ARRAY_SIZE(pcie_gen_freq))
+		speed = 0;
+
+	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed]);
+}
+
 static void apply_bad_link_workaround(struct dw_pcie_rp *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);

@@ -453,18 +476,12 @@ static irqreturn_t tegra_pcie_ep_irq_thread(int irq, void *arg)
 	struct tegra_pcie_dw *pcie = arg;
 	struct dw_pcie_ep *ep = &pcie->pci.ep;
 	struct dw_pcie *pci = &pcie->pci;
-	u32 val, speed;
+	u32 val;
 
 	if (test_and_clear_bit(0, &pcie->link_status))
 		dw_pcie_ep_linkup(ep);
 
-	speed = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA) &
-		PCI_EXP_LNKSTA_CLS;
-
-	if (speed >= ARRAY_SIZE(pcie_gen_freq))
-		speed = 0;
-
-	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed]);
+	tegra_pcie_icc_set(pcie);
 
 	if (pcie->of_data->has_ltr_req_fix)
 		return IRQ_HANDLED;

@@ -950,9 +967,9 @@ static int tegra_pcie_dw_host_init(struct dw_pcie_rp *pp)
 
 static int tegra_pcie_dw_start_link(struct dw_pcie *pci)
 {
-	u32 val, offset, speed, tmp;
 	struct tegra_pcie_dw *pcie = to_tegra_pcie(pci);
 	struct dw_pcie_rp *pp = &pci->pp;
+	u32 val, offset, tmp;
 	bool retry = true;
 
 	if (pcie->of_data->mode == DW_PCIE_EP_TYPE) {

@@ -1023,13 +1040,7 @@ static int tegra_pcie_dw_start_link(struct dw_pcie *pci)
 		goto retry_link;
 	}
 
-	speed = dw_pcie_readw_dbi(pci, pcie->pcie_cap_base + PCI_EXP_LNKSTA) &
-		PCI_EXP_LNKSTA_CLS;
-
-	if (speed >= ARRAY_SIZE(pcie_gen_freq))
-		speed = 0;
-
-	clk_set_rate(pcie->core_clk, pcie_gen_freq[speed]);
+	tegra_pcie_icc_set(pcie);
 
 	tegra_pcie_enable_interrupts(pp);
 

@@ -2233,6 +2244,14 @@ static int tegra_pcie_dw_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, pcie);
 
+	pcie->icc_path = devm_of_icc_get(&pdev->dev, "write");
+	ret = PTR_ERR_OR_ZERO(pcie->icc_path);
+	if (ret) {
+		tegra_bpmp_put(pcie->bpmp);
+		dev_err_probe(&pdev->dev, ret, "failed to get write interconnect\n");
+		return ret;
+	}
+
 	switch (pcie->of_data->mode) {
 	case DW_PCIE_RC_TYPE:
 		ret = devm_request_irq(dev, pp->irq, tegra_pcie_rp_irq_handler,