diff --git a/arch/arm/mach-mx1/devices.c b/arch/arm/mach-mx1/devices.c
index ad4679b..686d8d2 100644
--- a/arch/arm/mach-mx1/devices.c
+++ b/arch/arm/mach-mx1/devices.c
@@ -232,25 +232,25 @@
 		.chip.label = "gpio-0",
 		.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR),
 		.irq = GPIO_INT_PORTA,
-		.virtual_irq_start = MXC_MAX_INT_LINES
+		.virtual_irq_start = MXC_GPIO_IRQ_START
 	},
 	[1] = {
 		.chip.label = "gpio-1",
 		.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x100),
 		.irq = GPIO_INT_PORTB,
-		.virtual_irq_start = MXC_MAX_INT_LINES + 32
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32
 	},
 	[2] = {
 		.chip.label = "gpio-2",
 		.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x200),
 		.irq = GPIO_INT_PORTC,
-		.virtual_irq_start = MXC_MAX_INT_LINES + 64
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 64
 	},
 	[3] = {
 		.chip.label = "gpio-3",
 		.base = (void __iomem *)IO_ADDRESS(GPIO_BASE_ADDR + 0x300),
 		.irq = GPIO_INT_PORTD,
-		.virtual_irq_start = MXC_MAX_INT_LINES + 96
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 96
 	}
 };
 
diff --git a/arch/arm/mach-mx2/devices.c b/arch/arm/mach-mx2/devices.c
index 0bad865..af121f5 100644
--- a/arch/arm/mach-mx2/devices.c
+++ b/arch/arm/mach-mx2/devices.c
@@ -230,32 +230,32 @@
 		.chip.label = "gpio-0",
 		.irq = MXC_INT_GPIO,
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 0),
-		.virtual_irq_start = MXC_MAX_INT_LINES,
+		.virtual_irq_start = MXC_GPIO_IRQ_START,
 	},
 	[1] = {
 		.chip.label = "gpio-1",
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 1),
-		.virtual_irq_start = MXC_MAX_INT_LINES + 32,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32,
 	},
 	[2] = {
 		.chip.label = "gpio-2",
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 2),
-		.virtual_irq_start = MXC_MAX_INT_LINES + 64,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 64,
 	},
 	[3] = {
 		.chip.label = "gpio-3",
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 3),
-		.virtual_irq_start = MXC_MAX_INT_LINES + 96,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 96,
 	},
 	[4] = {
 		.chip.label = "gpio-4",
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 4),
-		.virtual_irq_start = MXC_MAX_INT_LINES + 128,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 128,
 	},
 	[5] = {
 		.chip.label = "gpio-5",
 		.base = (void*)(AIPI_BASE_ADDR_VIRT + 0x15000 + 0x100 * 5),
-		.virtual_irq_start = MXC_MAX_INT_LINES + 160,
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 160,
 	}
 };
 
diff --git a/arch/arm/mach-mx3/devices.c b/arch/arm/mach-mx3/devices.c
index 3e61ff4..1d46cb4 100644
--- a/arch/arm/mach-mx3/devices.c
+++ b/arch/arm/mach-mx3/devices.c
@@ -125,19 +125,19 @@
 		.chip.label = "gpio-0",
 		.base = IO_ADDRESS(GPIO1_BASE_ADDR),
 		.irq = MXC_INT_GPIO1,
-		.virtual_irq_start = MXC_GPIO_INT_BASE
+		.virtual_irq_start = MXC_GPIO_IRQ_START,
 	},
 	[1] = {
 		.chip.label = "gpio-1",
 		.base = IO_ADDRESS(GPIO2_BASE_ADDR),
 		.irq = MXC_INT_GPIO2,
-		.virtual_irq_start = MXC_GPIO_INT_BASE + GPIO_NUM_PIN
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 32,
 	},
 	[2] = {
 		.chip.label = "gpio-2",
 		.base = IO_ADDRESS(GPIO3_BASE_ADDR),
 		.irq = MXC_INT_GPIO3,
-		.virtual_irq_start = MXC_GPIO_INT_BASE + GPIO_NUM_PIN * 2
+		.virtual_irq_start = MXC_GPIO_IRQ_START + 64,
 	}
 };
 
diff --git a/arch/arm/plat-mxc/include/mach/board-mx27ads.h b/arch/arm/plat-mxc/include/mach/board-mx27ads.h
index 0c748a8..8f34a05 100644
--- a/arch/arm/plat-mxc/include/mach/board-mx27ads.h
+++ b/arch/arm/plat-mxc/include/mach/board-mx27ads.h
@@ -15,7 +15,7 @@
 #define __ASM_ARCH_MXC_BOARD_MX27ADS_H__
 
 /* external interrupt multiplexer */
-#define MXC_EXP_IO_BASE		(MXC_GPIO_BASE + MXC_MAX_GPIO_LINES)
+#define MXC_EXP_IO_BASE		(MXC_BOARD_IRQ_START)
 
 #define MXC_VIRTUAL_INTS_BASE	(MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES)
 #define MXC_SDIO1_CARD_IRQ	MXC_VIRTUAL_INTS_BASE
diff --git a/arch/arm/plat-mxc/include/mach/board-mx31ads.h b/arch/arm/plat-mxc/include/mach/board-mx31ads.h
index 745b488..451d510 100644
--- a/arch/arm/plat-mxc/include/mach/board-mx31ads.h
+++ b/arch/arm/plat-mxc/include/mach/board-mx31ads.h
@@ -90,7 +90,7 @@
 #define PBC_INTMASK_CLEAR_REG	(PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
 #define EXPIO_PARENT_INT	IOMUX_TO_IRQ(MX31_PIN_GPIO1_4)
 
-#define MXC_EXP_IO_BASE		(MXC_MAX_INT_LINES + MXC_MAX_GPIO_LINES)
+#define MXC_EXP_IO_BASE		(MXC_BOARD_IRQ_START)
 #define MXC_IRQ_TO_EXPIO(irq)	((irq) - MXC_EXP_IO_BASE)
 
 #define EXPIO_INT_LOW_BAT	(MXC_EXP_IO_BASE + 0)
diff --git a/arch/arm/plat-mxc/include/mach/gpio.h b/arch/arm/plat-mxc/include/mach/gpio.h
index 65eedc0..ea509f1 100644
--- a/arch/arm/plat-mxc/include/mach/gpio.h
+++ b/arch/arm/plat-mxc/include/mach/gpio.h
@@ -27,8 +27,8 @@
 #define gpio_set_value		__gpio_set_value
 #define gpio_cansleep		__gpio_cansleep
 
-#define gpio_to_irq(gpio)	(MXC_MAX_INT_LINES + (gpio))
-#define irq_to_gpio(irq)	((irq) - MXC_MAX_INT_LINES)
+#define gpio_to_irq(gpio)	(MXC_GPIO_IRQ_START + (gpio))
+#define irq_to_gpio(irq)	((irq) - MXC_GPIO_IRQ_START)
 
 struct mxc_gpio_port {
 	void __iomem *base;
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h b/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h
index 60b3c9b..95a383b 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h
@@ -405,9 +405,9 @@
 #endif
 
 /* decode irq number to use with IMR(x), ISR(x) and friends */
-#define IRQ_TO_REG(irq) ((irq - MXC_MAX_INT_LINES) >> 5)
+#define IRQ_TO_REG(irq) ((irq - MXC_INTERNAL_IRQS) >> 5)
 
-#define IRQ_GPIOA(x)  (MXC_MAX_INT_LINES + x)
+#define IRQ_GPIOA(x)  (MXC_GPIO_IRQ_START + x)
 #define IRQ_GPIOB(x)  (IRQ_GPIOA(32) + x)
 #define IRQ_GPIOC(x)  (IRQ_GPIOB(32) + x)
 #define IRQ_GPIOD(x)  (IRQ_GPIOC(32) + x)
diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx3.h b/arch/arm/plat-mxc/include/mach/iomux-mx3.h
index 20e5c4c..c9198c0 100644
--- a/arch/arm/plat-mxc/include/mach/iomux-mx3.h
+++ b/arch/arm/plat-mxc/include/mach/iomux-mx3.h
@@ -141,7 +141,7 @@
 	((iomux_pin & IOMUX_GPIONUM_MASK) >> IOMUX_GPIONUM_SHIFT)
 #define IOMUX_TO_IRQ(iomux_pin) \
 	(((iomux_pin & IOMUX_GPIONUM_MASK) >> IOMUX_GPIONUM_SHIFT) + \
-	MXC_GPIO_INT_BASE)
+	MXC_GPIO_IRQ_START)
 
 /*
  * This enumeration is constructed based on the Section
diff --git a/arch/arm/plat-mxc/include/mach/irqs.h b/arch/arm/plat-mxc/include/mach/irqs.h
index b8ac916..e06d3cb 100644
--- a/arch/arm/plat-mxc/include/mach/irqs.h
+++ b/arch/arm/plat-mxc/include/mach/irqs.h
@@ -11,7 +11,32 @@
 #ifndef __ASM_ARCH_MXC_IRQS_H__
 #define __ASM_ARCH_MXC_IRQS_H__
 
-#include <mach/hardware.h>
+/*
+ * So far all i.MX SoCs have 64 internal interrupts
+ */
+#define MXC_INTERNAL_IRQS	64
+
+#define MXC_GPIO_IRQ_START	MXC_INTERNAL_IRQS
+
+#if defined CONFIG_ARCH_MX1
+#define MXC_GPIO_IRQS		(32 * 4)
+#elif defined CONFIG_ARCH_MX2
+#define MXC_GPIO_IRQS		(32 * 6)
+#elif defined CONFIG_ARCH_MX3
+#define MXC_GPIO_IRQS		(32 * 3)
+#endif
+
+/*
+ * The next 16 interrupts are for board specific purposes.  Since
+ * the kernel can only run on one machine at a time, we can re-use
+ * these.  If you need more, increase MXC_BOARD_IRQS, but keep it
+ * within sensible limits.
+ */
+#define MXC_BOARD_IRQ_START	(MXC_INTERNAL_IRQS + MXC_GPIO_IRQS)
+#define MXC_BOARD_IRQS	16
+
+#define NR_IRQS		(MXC_BOARD_IRQ_START + MXC_BOARD_IRQS)
+
 extern void imx_irq_set_priority(unsigned char irq, unsigned char prio);
 
 /* all normal IRQs can be FIQs */
diff --git a/arch/arm/plat-mxc/include/mach/mx1.h b/arch/arm/plat-mxc/include/mach/mx1.h
index e7f6d00..c45bf5f 100644
--- a/arch/arm/plat-mxc/include/mach/mx1.h
+++ b/arch/arm/plat-mxc/include/mach/mx1.h
@@ -145,10 +145,6 @@
 #define GPIO_INT_PORTD		62
 #define WDT_INT			63
 
-#define MXC_MAX_INT_LINES	64
-
-#define NR_IRQS			256
-
 /* gpio and gpio based interrupt handling */
 #define GPIO_DR		 	0x1C
 #define GPIO_GDIR	 	0x00
diff --git a/arch/arm/plat-mxc/include/mach/mx27.h b/arch/arm/plat-mxc/include/mach/mx27.h
index aade46d..55bcbd5 100644
--- a/arch/arm/plat-mxc/include/mach/mx27.h
+++ b/arch/arm/plat-mxc/include/mach/mx27.h
@@ -295,10 +295,4 @@
 /* Start of RAM */
 #define PHYS_OFFSET		SDRAM_BASE_ADDR
 
-/* max interrupt lines count */
-#define NR_IRQS			256
-
-/* count of internal interrupt sources */
-#define MXC_MAX_INT_LINES	64
-
 #endif /* __ASM_ARCH_MXC_MX27_H__ */
diff --git a/arch/arm/plat-mxc/include/mach/mx31.h b/arch/arm/plat-mxc/include/mach/mx31.h
index 0536f89..65c3109 100644
--- a/arch/arm/plat-mxc/include/mach/mx31.h
+++ b/arch/arm/plat-mxc/include/mach/mx31.h
@@ -315,23 +315,6 @@
 #define MXC_INT_EXT_WDOG	62
 #define MXC_INT_EXT_TV		63
 
-#define MXC_MAX_INT_LINES	64
-
-#define MXC_GPIO_INT_BASE	MXC_MAX_INT_LINES
-#define MXC_MAX_GPIO_LINES      (GPIO_NUM_PIN * GPIO_PORT_NUM)
-#define MXC_MAX_VIRTUAL_INTS	16
-
-#define NR_IRQS (MXC_MAX_INT_LINES + MXC_MAX_GPIO_LINES + MXC_MAX_VIRTUAL_INTS)
-
-/*!
- * Number of GPIO port as defined in the IC Spec
- */
-#define GPIO_PORT_NUM		3
-/*!
- * Number of GPIO pins per port
- */
-#define GPIO_NUM_PIN		32
-
 #define PROD_SIGNATURE		0x1	/* For MX31 */
 
 /* silicon revisions specific to i.MX31 */
diff --git a/arch/arm/plat-mxc/irq.c b/arch/arm/plat-mxc/irq.c
index e937c87..0686265 100644
--- a/arch/arm/plat-mxc/irq.c
+++ b/arch/arm/plat-mxc/irq.c
@@ -72,14 +72,14 @@
 {
 	unsigned int irqt;
 
-	if (irq >= MXC_MAX_INT_LINES)
+	if (irq >= MXC_INTERNAL_IRQS)
 		return -EINVAL;
 
-	if (irq < MXC_MAX_INT_LINES / 2) {
+	if (irq < MXC_INTERNAL_IRQS / 2) {
 		irqt = __raw_readl(AVIC_INTTYPEL) & ~(1 << irq);
 		__raw_writel(irqt | (!!type << irq), AVIC_INTTYPEL);
 	} else {
-		irq -= MXC_MAX_INT_LINES / 2;
+		irq -= MXC_INTERNAL_IRQS / 2;
 		irqt = __raw_readl(AVIC_INTTYPEH) & ~(1 << irq);
 		__raw_writel(irqt | (!!type << irq), AVIC_INTTYPEH);
 	}
@@ -129,7 +129,7 @@
 	/* all IRQ no FIQ */
 	__raw_writel(0, AVIC_INTTYPEH);
 	__raw_writel(0, AVIC_INTTYPEL);
-	for (i = 0; i < MXC_MAX_INT_LINES; i++) {
+	for (i = 0; i < MXC_INTERNAL_IRQS; i++) {
 		set_irq_chip(i, &mxc_avic_chip);
 		set_irq_handler(i, handle_level_irq);
 		set_irq_flags(i, IRQF_VALID);
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 73dea88..a509546 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -191,7 +191,7 @@
 #define SERIAL_IMX_MAJOR        207
 #define MINOR_START	        16
 #define DEV_NAME		"ttymxc"
-#define MAX_INTERNAL_IRQ	MXC_MAX_INT_LINES
+#define MAX_INTERNAL_IRQ	MXC_INTERNAL_IRQS
 #endif
 
 /*