Index: linux-2.6.18/arch/avr32/mach-at32ap/at32ap7000.c
===================================================================
--- linux-2.6.18.orig/arch/avr32/mach-at32ap/at32ap7000.c	2006-12-01 16:23:28.000000000 +0100
+++ linux-2.6.18/arch/avr32/mach-at32ap/at32ap7000.c	2006-12-01 17:01:59.000000000 +0100
@@ -518,6 +518,13 @@
 DEFINE_DEV(pio, 3);
 DEV_CLK(mck, pio3, pba, 13);
 
+static struct resource pio4_resource[] = {
+	PBMEM(0xffe03800),
+	IRQ(17),
+};
+DEFINE_DEV(pio, 4);
+DEV_CLK(mck, pio4, pba, 14);
+
 void __init at32_add_system_devices(void)
 {
 	system_manager.eim_first_irq = NR_INTERNAL_IRQS;
@@ -532,6 +539,7 @@
 	platform_device_register(&pio1_device);
 	platform_device_register(&pio2_device);
 	platform_device_register(&pio3_device);
+	platform_device_register(&pio4_device);
 }
 
 /* --------------------------------------------------------------------
@@ -1119,6 +1127,7 @@
 	&pio1_mck,
 	&pio2_mck,
 	&pio3_mck,
+	&pio4_mck,
 	&usart0_usart,
 	&usart1_usart,
 	&usart2_usart,
@@ -1148,6 +1157,7 @@
 	at32_init_pio(&pio1_device);
 	at32_init_pio(&pio2_device);
 	at32_init_pio(&pio3_device);
+	at32_init_pio(&pio4_device);
 }
 
 void __init at32_clock_init(void)
Index: linux-2.6.18/include/asm-avr32/arch-at32ap/irq.h
===================================================================
--- linux-2.6.18.orig/include/asm-avr32/arch-at32ap/irq.h	2006-12-01 17:02:17.000000000 +0100
+++ linux-2.6.18/include/asm-avr32/arch-at32ap/irq.h	2006-12-01 17:02:24.000000000 +0100
@@ -4,7 +4,7 @@
 #define EIM_IRQ_BASE	NR_INTERNAL_IRQS
 #define NR_EIM_IRQS	32
 #define GPIO_IRQ_BASE	(EIM_IRQ_BASE + NR_EIM_IRQS)
-#define NR_GPIO_IRQS	(4 * 32)
+#define NR_GPIO_IRQS	(5 * 32)
 
 #define NR_IRQS		(GPIO_IRQ_BASE + NR_GPIO_IRQS)