diff --git a/drivers/media/platform/renesas/vsp1/Makefile b/drivers/media/platform/renesas/vsp1/Makefile
index 4bb4dcbef7b55be7a40231a04e14029911da9beb..e080377af01672451c3274118f74dbd132ec573f 100644
--- a/drivers/media/platform/renesas/vsp1/Makefile
+++ b/drivers/media/platform/renesas/vsp1/Makefile
@@ -5,6 +5,6 @@ vsp1-y					+= vsp1_rpf.o vsp1_rwpf.o vsp1_wpf.o
 vsp1-y					+= vsp1_clu.o vsp1_hsit.o vsp1_lut.o
 vsp1-y					+= vsp1_brx.o vsp1_sru.o vsp1_uds.o
 vsp1-y					+= vsp1_hgo.o vsp1_hgt.o vsp1_histo.o
-vsp1-y					+= vsp1_lif.o vsp1_uif.o
+vsp1-y					+= vsp1_lif.o vsp1_uif.o vsp1_iif.o
 
 obj-$(CONFIG_VIDEO_RENESAS_VSP1)	+= vsp1.o
diff --git a/drivers/media/platform/renesas/vsp1/vsp1.h b/drivers/media/platform/renesas/vsp1/vsp1.h
index 2f6f0c6ae55514d312e48232a5f8c8673f69ba13..263024639dd2a7564fc70ad52dbe17f9a5279f45 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1.h
+++ b/drivers/media/platform/renesas/vsp1/vsp1.h
@@ -32,6 +32,7 @@ struct vsp1_clu;
 struct vsp1_hgo;
 struct vsp1_hgt;
 struct vsp1_hsit;
+struct vsp1_iif;
 struct vsp1_lif;
 struct vsp1_lut;
 struct vsp1_rwpf;
@@ -56,6 +57,7 @@ struct vsp1_uif;
 #define VSP1_HAS_BRS		BIT(9)
 #define VSP1_HAS_EXT_DL		BIT(10)
 #define VSP1_HAS_NON_ZERO_LBA	BIT(11)
+#define VSP1_HAS_IIF		BIT(12)
 
 struct vsp1_device_info {
 	u32 version;
@@ -91,6 +93,7 @@ struct vsp1_device {
 	struct vsp1_hgt *hgt;
 	struct vsp1_hsit *hsi;
 	struct vsp1_hsit *hst;
+	struct vsp1_iif *iif;
 	struct vsp1_lif *lif[VSP1_MAX_LIF];
 	struct vsp1_lut *lut;
 	struct vsp1_rwpf *rpf[VSP1_MAX_RPF];
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drv.c b/drivers/media/platform/renesas/vsp1/vsp1_drv.c
index 9fc6bf624a520ae38e9c5f30dfa4dfa412eec38e..cbaad0ea0b73f90f3994bbdfb4304d2f71eabccd 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_drv.c
@@ -29,6 +29,7 @@
 #include "vsp1_hgo.h"
 #include "vsp1_hgt.h"
 #include "vsp1_hsit.h"
+#include "vsp1_iif.h"
 #include "vsp1_lif.h"
 #include "vsp1_lut.h"
 #include "vsp1_pipe.h"
@@ -292,6 +293,16 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
 		list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
 	}
 
+	if (vsp1_feature(vsp1, VSP1_HAS_IIF)) {
+		vsp1->iif = vsp1_iif_create(vsp1);
+		if (IS_ERR(vsp1->iif)) {
+			ret = PTR_ERR(vsp1->iif);
+			goto done;
+		}
+
+		list_add_tail(&vsp1->iif->entity.list_dev, &vsp1->entities);
+	}
+
 	if (vsp1_feature(vsp1, VSP1_HAS_CLU)) {
 		vsp1->clu = vsp1_clu_create(vsp1);
 		if (IS_ERR(vsp1->clu)) {
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_entity.c b/drivers/media/platform/renesas/vsp1/vsp1_entity.c
index 8b8945bd8f108354f1b484530bc496dbac7d3d88..343fc8f7fd6ef37a1c2e10ceaca2b7818cbd752d 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_entity.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_entity.c
@@ -63,9 +63,14 @@ void vsp1_entity_route_setup(struct vsp1_entity *entity,
 	/*
 	 * The ILV and BRS share the same data path route. The extra BRSSEL bit
 	 * selects between the ILV and BRS.
+	 *
+	 * For VSPX the IIF (a specialized BRU) is enabled with the extra
+	 * IIFSEL bit.
 	 */
 	if (source->type == VSP1_ENTITY_BRS)
 		route |= VI6_DPR_ROUTE_BRSSEL;
+	else if (source->type == VSP1_ENTITY_IIF)
+		route |= VI6_DPR_BRU_ROUTE_IIFSEL;
 	vsp1_dl_body_write(dlb, source->route->reg, route);
 }
 
@@ -528,6 +533,9 @@ struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad)
 	  { VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) }
 
 static const struct vsp1_route vsp1_routes[] = {
+	{ VSP1_ENTITY_IIF, 0, VI6_DPR_BRU_ROUTE,
+	  { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
+	    VI6_DPR_NODE_BRU_IN(3) }, VI6_DPR_NODE_WPF(0) },
 	{ VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE,
 	  { VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 },
 	{ VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_entity.h b/drivers/media/platform/renesas/vsp1/vsp1_entity.h
index 1bcc9e27dfdc7385e91987c84c46fc3725f3b90e..bdcb780a79dafccda3843bd65d337b64d6e12eb3 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_entity.h
+++ b/drivers/media/platform/renesas/vsp1/vsp1_entity.h
@@ -28,6 +28,7 @@ enum vsp1_entity_type {
 	VSP1_ENTITY_HGT,
 	VSP1_ENTITY_HSI,
 	VSP1_ENTITY_HST,
+	VSP1_ENTITY_IIF,
 	VSP1_ENTITY_LIF,
 	VSP1_ENTITY_LUT,
 	VSP1_ENTITY_RPF,
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_iif.c b/drivers/media/platform/renesas/vsp1/vsp1_iif.c
new file mode 100644
index 0000000000000000000000000000000000000000..ceb5e5988b02d86e9b444036ba70c7517d863850
--- /dev/null
+++ b/drivers/media/platform/renesas/vsp1/vsp1_iif.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * vsp1_iif.c  --  R-Car VSP1 IIF (ISP Interface)
+ *
+ * Copyright (C) 2025 Ideas On Board Oy
+ * Copyright (C) 2025 Renesas Corporation
+ */
+
+#include "vsp1.h"
+#include "vsp1_brx.h"
+#include "vsp1_dl.h"
+#include "vsp1_iif.h"
+
+#define IIF_MIN_WIDTH				128U
+#define IIF_MIN_HEIGHT				32U
+#define IIF_MAX_WIDTH				5120U
+#define IIF_MAX_HEIGHT				4096U
+
+/* -----------------------------------------------------------------------------
+ * Device Access
+ */
+
+static inline void vsp1_iif_write(struct vsp1_iif *iif,
+				  struct vsp1_dl_body *dlb, u32 reg, u32 data)
+{
+	vsp1_dl_body_write(dlb, iif->base + reg, data);
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 Subdevice Operations
+ */
+
+static const unsigned int iif_codes[] = {
+	MEDIA_BUS_FMT_SRGGB8_1X8,
+	MEDIA_BUS_FMT_SGRBG8_1X8,
+	MEDIA_BUS_FMT_SGBRG8_1X8,
+	MEDIA_BUS_FMT_SBGGR8_1X8,
+	MEDIA_BUS_FMT_SRGGB10_1X10,
+	MEDIA_BUS_FMT_SGRBG10_1X10,
+	MEDIA_BUS_FMT_SGBRG10_1X10,
+	MEDIA_BUS_FMT_SBGGR10_1X10,
+	MEDIA_BUS_FMT_SRGGB12_1X12,
+	MEDIA_BUS_FMT_SGRBG12_1X12,
+	MEDIA_BUS_FMT_SGBRG12_1X12,
+	MEDIA_BUS_FMT_SBGGR12_1X12,
+	MEDIA_BUS_FMT_SRGGB16_1X16,
+	MEDIA_BUS_FMT_SGRBG16_1X16,
+	MEDIA_BUS_FMT_SGBRG16_1X16,
+	MEDIA_BUS_FMT_SBGGR16_1X16,
+	MEDIA_BUS_FMT_METADATA_FIXED
+};
+
+static int iif_enum_mbus_code(struct v4l2_subdev *subdev,
+			      struct v4l2_subdev_state *sd_state,
+			      struct v4l2_subdev_mbus_code_enum *code)
+{
+	return vsp1_subdev_enum_mbus_code(subdev, sd_state, code, iif_codes,
+					  ARRAY_SIZE(iif_codes));
+}
+
+static int iif_enum_frame_size(struct v4l2_subdev *subdev,
+			       struct v4l2_subdev_state *sd_state,
+			       struct v4l2_subdev_frame_size_enum *fse)
+{
+	return vsp1_subdev_enum_frame_size(subdev, sd_state, fse,
+					   IIF_MIN_WIDTH, IIF_MIN_HEIGHT,
+					   IIF_MAX_WIDTH, IIF_MAX_HEIGHT);
+}
+
+static int iif_set_format(struct v4l2_subdev *subdev,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *fmt)
+{
+	return vsp1_subdev_set_pad_format(subdev, sd_state, fmt, iif_codes,
+					  ARRAY_SIZE(iif_codes),
+					  IIF_MIN_WIDTH, IIF_MIN_HEIGHT,
+					  IIF_MAX_WIDTH, IIF_MAX_HEIGHT);
+}
+
+static const struct v4l2_subdev_pad_ops iif_pad_ops = {
+	.enum_mbus_code = iif_enum_mbus_code,
+	.enum_frame_size = iif_enum_frame_size,
+	.get_fmt = vsp1_subdev_get_pad_format,
+	.set_fmt = iif_set_format,
+};
+
+static const struct v4l2_subdev_ops iif_ops = {
+	.pad    = &iif_pad_ops,
+};
+
+/* -----------------------------------------------------------------------------
+ * VSP1 Entity Operations
+ */
+
+static void iif_configure_stream(struct vsp1_entity *entity,
+				 struct v4l2_subdev_state *state,
+				 struct vsp1_pipeline *pipe,
+				 struct vsp1_dl_list *dl,
+				 struct vsp1_dl_body *dlb)
+{
+	struct vsp1_iif *iif = to_iif(&entity->subdev);
+
+	vsp1_iif_write(iif, dlb, VI6_IIF_CTRL, VI6_IIF_CTRL_CTRL);
+}
+
+static const struct vsp1_entity_operations iif_entity_ops = {
+	.configure_stream = iif_configure_stream,
+};
+
+/* -----------------------------------------------------------------------------
+ * Initialization and Cleanup
+ */
+
+struct vsp1_iif *vsp1_iif_create(struct vsp1_device *vsp1)
+{
+	struct vsp1_iif *iif;
+	int ret;
+
+	iif = devm_kzalloc(vsp1->dev, sizeof(*iif), GFP_KERNEL);
+	if (iif == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	/* IIF is a specialized BRU instance, uses the same register base. */
+	iif->base = VI6_BRU_BASE;
+	iif->entity.ops = &iif_entity_ops;
+	iif->entity.type = VSP1_ENTITY_IIF;
+
+	ret = vsp1_entity_init(vsp1, &iif->entity, "iif", 3, &iif_ops,
+			       MEDIA_ENT_F_PROC_VIDEO_COMPOSER);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return iif;
+}
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_iif.h b/drivers/media/platform/renesas/vsp1/vsp1_iif.h
new file mode 100644
index 0000000000000000000000000000000000000000..2ec3b1e3aeaca943dab870ca997ff1a582ef8117
--- /dev/null
+++ b/drivers/media/platform/renesas/vsp1/vsp1_iif.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * vsp1_iif.h  --  R-Car VSP1 IIF (ISP Interface)
+ *
+ * Copyright (C) 2025 Ideas On Board Oy
+ * Copyright (C) 2025 Renesas Corporation
+ */
+#ifndef __VSP1_IIF_H__
+#define __VSP1_IIF_H__
+
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+
+#include "vsp1_entity.h"
+
+#define IIF_PAD_SINK 0
+
+struct vsp1_iif {
+	struct vsp1_entity entity;
+	unsigned int base;
+};
+
+static inline struct vsp1_iif *to_iif(struct v4l2_subdev *subdev)
+{
+	return container_of(subdev, struct vsp1_iif, entity.subdev);
+}
+
+struct vsp1_iif *vsp1_iif_create(struct vsp1_device *vsp1);
+
+#endif /* __VSP1_IIF_H__ */
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_pipe.c b/drivers/media/platform/renesas/vsp1/vsp1_pipe.c
index bb0739f684f39e23326a4d8fdb9f43e020bc23c8..8e9be3ec1b4dbdad1cbe35ae3a88952f46e41343 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_pipe.c
+++ b/drivers/media/platform/renesas/vsp1/vsp1_pipe.c
@@ -286,6 +286,7 @@ void vsp1_pipeline_reset(struct vsp1_pipeline *pipe)
 	pipe->brx = NULL;
 	pipe->hgo = NULL;
 	pipe->hgt = NULL;
+	pipe->iif = NULL;
 	pipe->lif = NULL;
 	pipe->uds = NULL;
 }
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_pipe.h b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h
index 1ba7bdbad5a845da0a4d71888e193e46d62bed90..1655a820da102003d3d7da82a7cdd64e01c29ac6 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_pipe.h
+++ b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h
@@ -119,6 +119,7 @@ struct vsp1_pipeline {
 	struct vsp1_entity *brx;
 	struct vsp1_entity *hgo;
 	struct vsp1_entity *hgt;
+	struct vsp1_entity *iif;
 	struct vsp1_entity *lif;
 	struct vsp1_entity *uds;
 	struct vsp1_entity *uds_input;
diff --git a/drivers/media/platform/renesas/vsp1/vsp1_regs.h b/drivers/media/platform/renesas/vsp1/vsp1_regs.h
index 7eca82e0ba7ec5e02a5f3b9a30ccdcb48db39ed2..5d655785db85fe7cc7d7774fac168ca98891a0f5 100644
--- a/drivers/media/platform/renesas/vsp1/vsp1_regs.h
+++ b/drivers/media/platform/renesas/vsp1/vsp1_regs.h
@@ -252,6 +252,12 @@
 #define VI6_RPF_BRDITH_CTRL_ODE		BIT(8)
 #define VI6_RPF_BRDITH_CTRL_CBRM	BIT(0)
 
+/* -----------------------------------------------------------------------------
+ * IIF Control Registers
+ */
+#define VI6_IIF_CTRL			0x0608
+#define VI6_IIF_CTRL_CTRL		0x13
+
 /* -----------------------------------------------------------------------------
  * WPF Control Registers
  */
@@ -388,6 +394,7 @@
 #define VI6_DPR_HST_ROUTE		0x2044
 #define VI6_DPR_HSI_ROUTE		0x2048
 #define VI6_DPR_BRU_ROUTE		0x204c
+#define VI6_DPR_BRU_ROUTE_IIFSEL	BIT(28)
 #define VI6_DPR_ILV_BRS_ROUTE		0x2050
 #define VI6_DPR_ROUTE_BRSSEL		BIT(28)
 #define VI6_DPR_ROUTE_FXA_MASK		(0xff << 16)
