diff --git a/drivers/io/io_mtd.c b/drivers/io/io_mtd.c
index ba8cecdfb..5d86592db 100644
--- a/drivers/io/io_mtd.c
+++ b/drivers/io/io_mtd.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2019-2022, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,13 +8,13 @@
 #include <errno.h>
 #include <string.h>
 
-#include <platform_def.h>
-
 #include <common/debug.h>
 #include <drivers/io/io_driver.h>
 #include <drivers/io/io_mtd.h>
 #include <lib/utils.h>
 
+#include <platform_def.h>
+
 typedef struct {
 	io_mtd_dev_spec_t	*dev_spec;
 	uintptr_t		base;
@@ -214,7 +214,7 @@ static int mtd_read(io_entity_t *entity, uintptr_t buffer, size_t length,
 	ops = &cur->dev_spec->ops;
 	assert(ops->read != NULL);
 
-	VERBOSE("Read at %llx into %lx, length %zi\n",
+	VERBOSE("Read at %llx into %lx, length %zu\n",
 		cur->base + cur->pos, buffer, length);
 	if ((cur->base + cur->pos + length) > cur->dev_spec->device_size) {
 		return -EINVAL;
diff --git a/drivers/mtd/nand/spi_nand.c b/drivers/mtd/nand/spi_nand.c
index abb524d7f..542b614ff 100644
--- a/drivers/mtd/nand/spi_nand.c
+++ b/drivers/mtd/nand/spi_nand.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021,  STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022,  STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,13 +8,13 @@
 #include <errno.h>
 #include <stddef.h>
 
-#include <platform_def.h>
-
 #include <common/debug.h>
 #include <drivers/delay_timer.h>
 #include <drivers/spi_nand.h>
 #include <lib/utils.h>
 
+#include <platform_def.h>
+
 #define SPI_NAND_MAX_ID_LEN		4U
 #define DELAY_US_400MS			400000U
 #define MACRONIX_ID			0xC2U
@@ -246,7 +246,7 @@ static int spi_nand_mtd_block_is_bad(unsigned int block)
 
 	if ((bbm_marker[0] != GENMASK_32(7, 0)) ||
 	    (bbm_marker[1] != GENMASK_32(7, 0))) {
-		WARN("Block %i is bad\n", block);
+		WARN("Block %u is bad\n", block);
 		return 1;
 	}
 
@@ -312,7 +312,7 @@ int spi_nand_init(unsigned long long *size, unsigned int *erase_size)
 
 	VERBOSE("SPI_NAND Detected ID 0x%x\n", id[1]);
 
-	VERBOSE("Page size %i, Block size %i, size %lli\n",
+	VERBOSE("Page size %u, Block size %u, size %llu\n",
 		spinand_dev.nand_dev->page_size,
 		spinand_dev.nand_dev->block_size,
 		spinand_dev.nand_dev->size);
diff --git a/drivers/mtd/nor/spi_nor.c b/drivers/mtd/nor/spi_nor.c
index 6b4643e89..2e343448a 100644
--- a/drivers/mtd/nor/spi_nor.c
+++ b/drivers/mtd/nor/spi_nor.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -284,7 +284,7 @@ int spi_nor_read(unsigned int offset, uintptr_t buffer, size_t length,
 	nor_dev.read_op.addr.val = offset;
 	nor_dev.read_op.data.buf = (void *)buffer;
 
-	VERBOSE("%s offset %i length %zu\n", __func__, offset, length);
+	VERBOSE("%s offset %u length %zu\n", __func__, offset, length);
 
 	while (length != 0U) {
 		if ((nor_dev.flags & SPI_NOR_USE_BANK) != 0U) {
diff --git a/drivers/mtd/spi-mem/spi_mem.c b/drivers/mtd/spi-mem/spi_mem.c
index 010e8b62a..c43d5196c 100644
--- a/drivers/mtd/spi-mem/spi_mem.c
+++ b/drivers/mtd/spi-mem/spi_mem.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,10 +8,9 @@
 #include <inttypes.h>
 #include <stdint.h>
 
-#include <libfdt.h>
-
 #include <drivers/spi_mem.h>
 #include <lib/utils_def.h>
+#include <libfdt.h>
 
 #define SPI_MEM_DEFAULT_SPEED_HZ 100000U
 
@@ -258,7 +257,7 @@ int spi_mem_init_slave(void *fdt, int bus_node, const struct spi_bus_ops *ops)
 				mode |= SPI_TX_QUAD;
 				break;
 			default:
-				WARN("spi-tx-bus-width %d not supported\n",
+				WARN("spi-tx-bus-width %u not supported\n",
 				     fdt32_to_cpu(*cuint));
 				return -EINVAL;
 			}
@@ -276,7 +275,7 @@ int spi_mem_init_slave(void *fdt, int bus_node, const struct spi_bus_ops *ops)
 				mode |= SPI_RX_QUAD;
 				break;
 			default:
-				WARN("spi-rx-bus-width %d not supported\n",
+				WARN("spi-rx-bus-width %u not supported\n",
 				     fdt32_to_cpu(*cuint));
 				return -EINVAL;
 			}