diff --git a/src/mainboard/asus/m2v/mainboard.c b/src/mainboard/asus/m2v/mainboard.c
index b1ac998ccb..3d2c3cb8e4 100644
--- a/src/mainboard/asus/m2v/mainboard.c
+++ b/src/mainboard/asus/m2v/mainboard.c
@@ -17,9 +17,45 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <arch/io.h>
 #include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <console/console.h>
+#include "southbridge/via/vt8237r/vt8237r.h"
 #include "chip.h"
 
+u32 vt8237_ide_80pin_detect(struct device *dev)
+{
+	device_t lpc_dev;
+	u16 acpi_io_base;
+	u32 gpio_in;
+	u32 res;
+
+	lpc_dev = dev_find_device(PCI_VENDOR_ID_VIA,
+				PCI_DEVICE_ID_VIA_VT8237A_LPC, 0);
+	if (!lpc_dev)
+		return;
+
+	acpi_io_base = pci_read_config16(lpc_dev, 0x88);
+	if (!acpi_io_base || (acpi_io_base & ~1) == 0)
+		return;
+	acpi_io_base &= ~1;
+
+	gpio_in = inl(acpi_io_base + 0x48);
+	/* bit 9 for primary port, clear if unconnected or 80-pin cable */
+	res  = gpio_in & (1<<9) ? 0 : VT8237R_IDE0_80PIN_CABLE;
+	/* bit 4 for secondary port, clear if unconnected or 80-pin cable */
+	res |= gpio_in & (1<<4) ? 0 : VT8237R_IDE1_80PIN_CABLE;
+
+	printk(BIOS_INFO, "Cable on %s PATA port: %d pin\n", "primary",
+		gpio_in & (1<<9) ? 40 : 80);
+	printk(BIOS_INFO, "Cable on %s PATA port: %d pin\n", "secondary",
+		gpio_in & (1<<4) ? 40 : 80);
+
+	return res;
+}
+
 struct chip_operations mainboard_ops = {
 	CHIP_NAME("ASUS M2V")
 };
diff --git a/src/southbridge/via/vt8237r/vt8237r.h b/src/southbridge/via/vt8237r/vt8237r.h
index ba7089b414..d187ce6dcf 100644
--- a/src/southbridge/via/vt8237r/vt8237r.h
+++ b/src/southbridge/via/vt8237r/vt8237r.h
@@ -45,6 +45,10 @@
 #define IDE_MISC_II			0x45
 #define IDE_UDMA			0x50
 
+#define VT8237R_IDE0_80PIN_CABLE ((1UL<<28)|(1UL<<20))
+#define VT8237R_IDE1_80PIN_CABLE ((1UL<<12)|(1UL<< 4))
+#define VT8237R_IDE_CABLESEL_MASK (VT8237R_IDE0_80PIN_CABLE|VT8237R_IDE1_80PIN_CABLE)
+
 /* SMBus */
 #define VT8237R_PSON			0x82
 #define VT8237R_POWER_WELL		0x94
@@ -118,6 +122,7 @@ int vt8237_early_network_init(struct vt8237_network_rom *rom);
 #include <device/device.h>
 void writeback(struct device *dev, u16 where, u8 what);
 void dump_south(device_t dev);
+u32 vt8237_ide_80pin_detect(struct device *dev);
 #endif
 
 #endif
diff --git a/src/southbridge/via/vt8237r/vt8237r_ide.c b/src/southbridge/via/vt8237r/vt8237r_ide.c
index ecbcfffc8c..209437b729 100644
--- a/src/southbridge/via/vt8237r/vt8237r_ide.c
+++ b/src/southbridge/via/vt8237r/vt8237r_ide.c
@@ -26,6 +26,19 @@
 #include "vt8237r.h"
 #include "chip.h"
 
+/**
+ * Cable type detect function, weak so it can be overloaded in mainboard.c
+ */
+u32 __attribute__((weak)) vt8237_ide_80pin_detect(struct device *dev)
+{
+	struct southbridge_via_vt8237r_config *sb =
+	    (struct southbridge_via_vt8237r_config *)dev->chip_info;
+	u32 res;
+	res  = sb->ide0_80pin_cable ? VT8237R_IDE0_80PIN_CABLE : 0;
+	res |= sb->ide1_80pin_cable ? VT8237R_IDE1_80PIN_CABLE : 0;
+	return res;
+}
+
 /**
  * No native mode. Interrupts from unconnected HDDs might occur if
  * IRQ14/15 is used for PCI. Therefore no native mode support.
@@ -88,11 +101,8 @@ static void ide_init(struct device *dev)
 
 	/* Cable guy... */
 	cablesel = pci_read_config32(dev, IDE_UDMA);
-	cablesel &= ~((1 << 28) | (1 << 20) | (1 << 12) | (1 << 4));
-	cablesel |= (sb->ide0_80pin_cable << 28) |
-		    (sb->ide0_80pin_cable << 20) |
-		    (sb->ide1_80pin_cable << 12) |
-		    (sb->ide1_80pin_cable << 4);
+	cablesel &= ~VT8237R_IDE_CABLESEL_MASK;
+	cablesel |= vt8237_ide_80pin_detect(dev);
 	pci_write_config32(dev, IDE_UDMA, cablesel);
 
 #if CONFIG_EPIA_VT8237R_INIT