diff --git a/drivers/soc/ti/Kconfig b/drivers/soc/ti/Kconfig
index be4570baad96..7640490c2a6a 100644
--- a/drivers/soc/ti/Kconfig
+++ b/drivers/soc/ti/Kconfig
@@ -73,4 +73,10 @@ config TI_SCI_PM_DOMAINS
 	  called ti_sci_pm_domains. Note this is needed early in boot before
 	  rootfs may be available.
 
+config K3_INTA_MSI_DOMAIN
+	bool
+	select GENERIC_MSI_IRQ_DOMAIN
+	help
+	  Driver to enable Interrupt Aggregator specific MSI Domain.
+
 endif # SOC_TI
diff --git a/drivers/soc/ti/Makefile b/drivers/soc/ti/Makefile
index a22edc0b258a..152b195273ee 100644
--- a/drivers/soc/ti/Makefile
+++ b/drivers/soc/ti/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_KEYSTONE_NAVIGATOR_DMA)	+= knav_dma.o
 obj-$(CONFIG_AMX3_PM)			+= pm33xx.o
 obj-$(CONFIG_WKUP_M3_IPC)		+= wkup_m3_ipc.o
 obj-$(CONFIG_TI_SCI_PM_DOMAINS)		+= ti_sci_pm_domains.o
+obj-$(CONFIG_K3_INTA_MSI_DOMAIN)	+= k3_inta_msi.o
diff --git a/drivers/soc/ti/k3_inta_msi.c b/drivers/soc/ti/k3_inta_msi.c
new file mode 100644
index 000000000000..ffce1a7541e2
--- /dev/null
+++ b/drivers/soc/ti/k3_inta_msi.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments' K3 Interrupt Aggregator MSI bus
+ *
+ * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
+ *	Lokesh Vutla <lokeshvutla@ti.com>
+ */
+
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/msi.h>
+#include <linux/soc/ti/k3_inta_msi.h>
+
+static void inta_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
+{
+	/* Nothing to do */
+}
+
+static void inta_msi_compose_msi_msg(struct irq_data *data,
+				     struct msi_msg *msg)
+{
+	/* Nothing to do */
+}
+
+static void inta_msi_update_chip_ops(struct msi_domain_info *info)
+{
+	struct irq_chip *chip = info->chip;
+
+	BUG_ON(!chip);
+	if (!chip->irq_mask)
+		chip->irq_mask = irq_chip_mask_parent;
+	if (!chip->irq_unmask)
+		chip->irq_unmask = irq_chip_unmask_parent;
+	if (!chip->irq_eoi)
+		chip->irq_eoi = irq_chip_eoi_parent;
+	if (!chip->irq_write_msi_msg)
+		chip->irq_write_msi_msg = inta_msi_write_msg;
+	if (!chip->irq_compose_msi_msg)
+		chip->irq_compose_msi_msg = inta_msi_compose_msi_msg;
+}
+
+struct irq_domain *inta_msi_create_irq_domain(struct fwnode_handle *fwnode,
+					      struct msi_domain_info *info,
+					      struct irq_domain *parent)
+{
+	struct irq_domain *domain;
+
+	if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
+		inta_msi_update_chip_ops(info);
+
+	domain = msi_create_irq_domain(fwnode, info, parent);
+	if (domain)
+		irq_domain_update_bus_token(domain, DOMAIN_BUS_K3_INTA_MSI);
+
+	return domain;
+}
+EXPORT_SYMBOL_GPL(inta_msi_create_irq_domain);
+
+static void inta_msi_free_descs(struct device *dev)
+{
+	struct msi_desc *desc, *tmp;
+
+	list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
+		list_del(&desc->list);
+		free_msi_entry(desc);
+	}
+}
+
+static int inta_msi_alloc_descs(struct device *dev, u32 dev_id, int nvec,
+				u32 *arr_index, bool share)
+{
+	struct msi_desc *msi_desc;
+	int i;
+
+	for (i = 0; i < nvec; i++) {
+		msi_desc = alloc_msi_entry(dev, 1, NULL);
+		if (!msi_desc)
+			break;
+
+		msi_desc->inta.index = arr_index[i];
+		msi_desc->inta.dev_id = dev_id;
+		msi_desc->inta.share = share;
+		INIT_LIST_HEAD(&msi_desc->list);
+		list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
+	};
+
+	if (i != nvec) {
+		inta_msi_free_descs(dev);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+int inta_msi_domain_alloc_irqs(struct device *dev, u32 dev_id, int nvec,
+			       u32 *arr_index, bool share)
+{
+	struct irq_domain *msi_domain;
+	int ret;
+
+	msi_domain = dev_get_msi_domain(dev);
+	if (!msi_domain)
+		return -EINVAL;
+
+	ret = inta_msi_alloc_descs(dev, dev_id, nvec, arr_index, share);
+	if (ret)
+		return ret;
+
+	ret = msi_domain_alloc_irqs(msi_domain, dev, nvec);
+	if (ret) {
+		dev_err(dev, "Failed to allocate IRQs\n");
+		goto cleanup;
+	}
+
+	return 0;
+
+cleanup:
+	inta_msi_free_descs(dev);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(inta_msi_domain_alloc_irqs);
+
+void inta_msi_domain_free_irqs(struct device *dev)
+{
+	msi_domain_free_irqs(dev->msi_domain, dev);
+	inta_msi_free_descs(dev);
+}
+EXPORT_SYMBOL_GPL(inta_msi_domain_free_irqs);
+
+unsigned int inta_msi_get_virq(struct device *dev, u32 dev_id, u32 index)
+{
+	struct msi_desc *desc;
+
+	for_each_msi_entry(desc, dev)
+		if (desc->inta.index == index && desc->inta.dev_id == dev_id)
+			return desc->irq;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(inta_msi_get_virq);
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 35965f41d7be..05afb25062cf 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -82,6 +82,7 @@ enum irq_domain_bus_token {
 	DOMAIN_BUS_NEXUS,
 	DOMAIN_BUS_IPI,
 	DOMAIN_BUS_FSL_MC_MSI,
+	DOMAIN_BUS_K3_INTA_MSI,
 };
 
 /**
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 784fb52b9900..7e8a8786308e 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -47,6 +47,12 @@ struct fsl_mc_msi_desc {
 	u16				msi_index;
 };
 
+struct inta_msi_desc {
+	u16	dev_id;
+	u16	index;
+	bool share;
+};
+
 /**
  * struct msi_desc - Descriptor structure for MSI based interrupts
  * @list:	List head for management
@@ -106,6 +112,7 @@ struct msi_desc {
 		 */
 		struct platform_msi_desc platform;
 		struct fsl_mc_msi_desc fsl_mc;
+		struct inta_msi_desc inta;
 	};
 };
 
diff --git a/include/linux/soc/ti/k3_inta_msi.h b/include/linux/soc/ti/k3_inta_msi.h
new file mode 100644
index 000000000000..7fc8c9946cdc
--- /dev/null
+++ b/include/linux/soc/ti/k3_inta_msi.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Texas Instruments' K3 INTA MSI helper
+ *
+ * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
+ *	Lokesh Vutla <lokeshvutla@ti.com>
+ */
+
+#ifndef __INCLUDE_LINUX_K3_INTA_MSI_H
+#define __INCLUDE_LINUX_K3_INTA_MSI_H
+
+#include <linux/msi.h>
+
+struct irq_domain *inta_msi_create_irq_domain(struct fwnode_handle *fwnode,
+					      struct msi_domain_info *info,
+					      struct irq_domain *parent);
+int inta_msi_domain_alloc_irqs(struct device *dev, u32 dev_id, int nvec,
+			       u32 *arr_index, bool share);
+void inta_msi_domain_free_irqs(struct device *dev);
+unsigned int inta_msi_get_virq(struct device *dev, u32 dev_id, u32 index);
+#endif /* __INCLUDE_LINUX_IRQCHIP_TI_SCI_INTA_H */
