diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c
index 5e8edf3881c0d..61a88f68b458c 100644
--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -117,6 +117,16 @@ enum {
 	  IOM_PORT_STATUS_DHPD_HPD_STATUS_SHIFT) &			\
 	 IOM_PORT_STATUS_DHPD_HPD_STATUS_ASSERT)
 
+/* IOM port status register */
+#define IOM_PORT_STATUS_REGS(_offset_, _size_)	((_offset_) | (_size_))
+#define IOM_PORT_STATUS_REGS_SZ_MASK		BIT(0)
+#define IOM_PORT_STATUS_REGS_SZ_4		0
+#define IOM_PORT_STATUS_REGS_SZ_8		1
+#define IOM_PORT_STATUS_REGS_OFFSET(_d_)				\
+	((_d_) & ~IOM_PORT_STATUS_REGS_SZ_MASK)
+#define IOM_PORT_STATUS_REGS_SIZE(_d_)					\
+	(4 << ((_d_) & IOM_PORT_STATUS_REGS_SZ_MASK))
+
 struct pmc_usb;
 
 struct pmc_usb_port {
@@ -145,6 +155,7 @@ struct pmc_usb {
 	struct acpi_device *iom_adev;
 	void __iomem *iom_base;
 	u32 iom_port_status_offset;
+	u8 iom_port_status_size;
 
 	struct dentry *dentry;
 };
@@ -160,7 +171,7 @@ static void update_port_status(struct pmc_usb_port *port)
 
 	port->iom_status = readl(port->pmc->iom_base +
 				 port->pmc->iom_port_status_offset +
-				 port_num * sizeof(u32));
+				 port_num * port->pmc->iom_port_status_size);
 }
 
 static int sbu_orientation(struct pmc_usb_port *port)
@@ -589,13 +600,16 @@ static int pmc_usb_register_port(struct pmc_usb *pmc, int index,
 /* IOM ACPI IDs and IOM_PORT_STATUS_OFFSET */
 static const struct acpi_device_id iom_acpi_ids[] = {
 	/* TigerLake */
-	{ "INTC1072", 0x560, },
+	{ "INTC1072", IOM_PORT_STATUS_REGS(0x560, IOM_PORT_STATUS_REGS_SZ_4) },
 
 	/* AlderLake */
-	{ "INTC1079", 0x160, },
+	{ "INTC1079", IOM_PORT_STATUS_REGS(0x160, IOM_PORT_STATUS_REGS_SZ_4) },
 
 	/* Meteor Lake */
-	{ "INTC107A", 0x160, },
+	{ "INTC107A", IOM_PORT_STATUS_REGS(0x160, IOM_PORT_STATUS_REGS_SZ_4) },
+
+	/* Lunar Lake */
+	{ "INTC10EA", IOM_PORT_STATUS_REGS(0x150, IOM_PORT_STATUS_REGS_SZ_8) },
 	{}
 };
 
@@ -615,7 +629,8 @@ static int pmc_usb_probe_iom(struct pmc_usb *pmc)
 	if (!adev)
 		return -ENODEV;
 
-	pmc->iom_port_status_offset = (u32)dev_id->driver_data;
+	pmc->iom_port_status_offset = IOM_PORT_STATUS_REGS_OFFSET(dev_id->driver_data);
+	pmc->iom_port_status_size = IOM_PORT_STATUS_REGS_SIZE(dev_id->driver_data);
 
 	INIT_LIST_HEAD(&resource_list);
 	ret = acpi_dev_get_memory_resources(adev, &resource_list);