[AVR32] Add PIOE device and reserve SDRAM pins

The PIOE device was left out before because it muxes SDRAM pins (and
is therefore a bit dangerous to mess with) and because no existing
drivers had any use for it.

It is needed for CompactFlash, however, and now that we have a way
to protect the SDRAM pins, it can be safely added.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index 3787d6bfe0d7..bca815ff11f2 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -19,6 +19,7 @@
 #include <asm/setup.h>
 #include <asm/arch/board.h>
 #include <asm/arch/init.h>
+#include <asm/arch/portmux.h>
 
 
 #define SW2_DEFAULT             /* MMCI and UART_A available */
@@ -102,6 +103,28 @@ void __init setup_board(void)
 
 static int __init atstk1002_init(void)
 {
+        /*
+         * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
+         * SDRAM-specific pins so that nobody messes with them.
+         */
+        at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
+        at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
+        at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
+        at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
+        at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
+        at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
+        at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
+        at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
+        at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
+        at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
+        at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
+        at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
+        at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
+        at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
+        at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
+        at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
+        at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
+
         at32_add_system_devices();
 
 #ifdef  SW2_DEFAULT