diff --git a/board/atmel/atngw100/atngw100.c b/board/atmel/atngw100/atngw100.c
index f2c3e79799..4ead5336c6 100644
--- a/board/atmel/atngw100/atngw100.c
+++ b/board/atmel/atngw100/atngw100.c
@@ -81,7 +81,7 @@ phys_size_t initdram(int board_type)
 	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
 
 	if (expected_size != actual_size)
-		printf("Warning: Only %u of %u MiB SDRAM is working\n",
+		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
 
 	return actual_size;
diff --git a/board/atmel/atstk1000/atstk1000.c b/board/atmel/atstk1000/atstk1000.c
index 6371e2d4e3..d284fc1438 100644
--- a/board/atmel/atstk1000/atstk1000.c
+++ b/board/atmel/atstk1000/atstk1000.c
@@ -104,7 +104,7 @@ phys_size_t initdram(int board_type)
 	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
 
 	if (expected_size != actual_size)
-		printf("Warning: Only %u of %u MiB SDRAM is working\n",
+		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
 
 	return actual_size;
diff --git a/board/atmel/atstk1000/flash.c b/board/atmel/atstk1000/flash.c
index 12537f3142..e2bfd4aff2 100644
--- a/board/atmel/atstk1000/flash.c
+++ b/board/atmel/atstk1000/flash.c
@@ -70,7 +70,7 @@ unsigned long flash_init(void)
 
 void flash_print_info(flash_info_t *info)
 {
-	printf("Flash: Vendor ID: 0x%02x, Product ID: 0x%02x\n",
+	printf("Flash: Vendor ID: 0x%02lx, Product ID: 0x%02lx\n",
 	       info->flash_id >> 16, info->flash_id & 0xffff);
 	printf("Size: %ld MB in %d sectors\n",
 	       info->size >> 10, info->sector_count);
diff --git a/drivers/mmc/atmel_mci.c b/drivers/mmc/atmel_mci.c
index 61aa1849c2..a151488d12 100644
--- a/drivers/mmc/atmel_mci.c
+++ b/drivers/mmc/atmel_mci.c
@@ -135,10 +135,10 @@ mmc_cmd(unsigned long cmd, unsigned long arg,
 		status = mmci_readl(SR);
 	} while (!(status & MMCI_BIT(CMDRDY)));
 
-	pr_debug("mmc: status 0x%08lx\n", status);
+	pr_debug("mmc: status 0x%08x\n", status);
 
 	if (status & error_flags) {
-		printf("mmc: command %lu failed (status: 0x%08lx)\n",
+		printf("mmc: command %lu failed (status: 0x%08x)\n",
 		       cmd, status);
 		return -EIO;
 	}
@@ -245,7 +245,7 @@ out:
 
 read_error:
 	mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, R1 | NCR);
-	printf("mmc: bread failed, status = %08x, card status = %08x\n",
+	printf("mmc: bread failed, status = %08x, card status = %08lx\n",
 	       status, card_status);
 	goto out;
 }
@@ -284,13 +284,13 @@ static void sd_parse_cid(struct mmc_cid *cid, unsigned long *resp)
 
 static void mmc_dump_cid(const struct mmc_cid *cid)
 {
-	printf("Manufacturer ID:       %02lX\n", cid->mid);
-	printf("OEM/Application ID:    %04lX\n", cid->oid);
+	printf("Manufacturer ID:       %02X\n", cid->mid);
+	printf("OEM/Application ID:    %04X\n", cid->oid);
 	printf("Product name:          %s\n", cid->pnm);
-	printf("Product Revision:      %lu.%lu\n",
+	printf("Product Revision:      %u.%u\n",
 	       cid->prv >> 4, cid->prv & 0x0f);
 	printf("Product Serial Number: %lu\n", cid->psn);
-	printf("Manufacturing Date:    %02lu/%02lu\n",
+	printf("Manufacturing Date:    %02u/%02u\n",
 	       cid->mdt >> 4, cid->mdt & 0x0f);
 }
 
@@ -501,7 +501,7 @@ int mmc_init(int verbose)
 	mmc_blkdev.part_type = PART_TYPE_DOS;
 	mmc_blkdev.block_read = mmc_bread;
 	sprintf((char *)mmc_blkdev.vendor,
-		"Man %02x%04x Snr %08x",
+		"Man %02x%04x Snr %08lx",
 		cid.mid, cid.oid, cid.psn);
 	strncpy((char *)mmc_blkdev.product, cid.pnm,
 		sizeof(mmc_blkdev.product));
diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c
index fb7a4a939b..10fcf0cdde 100644
--- a/drivers/mtd/spi/atmel.c
+++ b/drivers/mtd/spi/atmel.c
@@ -205,7 +205,7 @@ static int dataflash_write_at45(struct spi_flash *flash,
 		byte_addr = 0;
 	}
 
-	debug("SF: AT45: Successfully programmed %u bytes @ 0x%x\n",
+	debug("SF: AT45: Successfully programmed %zu bytes @ 0x%x\n",
 			len, offset);
 	ret = 0;
 
@@ -268,7 +268,7 @@ int dataflash_erase_at45(struct spi_flash *flash, u32 offset, size_t len)
 		page_addr++;
 	}
 
-	debug("SF: AT45: Successfully erased %u bytes @ 0x%x\n",
+	debug("SF: AT45: Successfully erased %zu bytes @ 0x%x\n",
 			len, offset);
 	ret = 0;
 
@@ -351,7 +351,7 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode)
 				* params->blocks_per_sector
 				* params->nr_sectors;
 
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
+	debug("SF: Detected %s with page size %lu, total %u bytes\n",
 			params->name, page_size, asf->flash.size);
 
 	return &asf->flash;
diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
index d030c262a5..06e52b137f 100644
--- a/include/asm-avr32/io.h
+++ b/include/asm-avr32/io.h
@@ -22,6 +22,8 @@
 #ifndef __ASM_AVR32_IO_H
 #define __ASM_AVR32_IO_H
 
+#include <asm/types.h>
+
 #ifdef __KERNEL__
 
 /*
diff --git a/include/asm-avr32/sysreg.h b/include/asm-avr32/sysreg.h
index 72ad49e5e2..4f6970448b 100644
--- a/include/asm-avr32/sysreg.h
+++ b/include/asm-avr32/sysreg.h
@@ -273,7 +273,9 @@
 	 | SYSREG_BF(name,value))
 
 /* Register access macros */
-#define sysreg_read(reg)		__builtin_mfsr(SYSREG_##reg)
-#define sysreg_write(reg, value)	__builtin_mtsr(SYSREG_##reg, value)
+#define sysreg_read(reg)				\
+	((unsigned long)__builtin_mfsr(SYSREG_##reg))
+#define sysreg_write(reg, value)			\
+	__builtin_mtsr(SYSREG_##reg, value)
 
 #endif /* __ASM_AVR32_SYSREG_H__ */