diff --git a/arch/arm/dts/ca-presidio-engboard.dts b/arch/arm/dts/ca-presidio-engboard.dts
index eef433e..cc7c888 100644
--- a/arch/arm/dts/ca-presidio-engboard.dts
+++ b/arch/arm/dts/ca-presidio-engboard.dts
@@ -53,15 +53,13 @@
 	};
 
 	sflash: sflash-controller at f4324000 {
-		#address-cells = <2>;
-		#size-cells = <1>;
 		compatible = "cortina,ca-sflash";
 		reg = <0x0 0xf4324000 0x50>;
 		reg-names = "sflash-regs";
 		flash at 0 {
 			compatible = "jedec,spi-nor";
-			spi-rx-bus-width = <1>;
-			spi-max-frequency = <108000000>;
+			spi-rx-bus-width = <4>;
+			spi-tx-bus-width = <4>;
 		};
 	};
 
diff --git a/board/cortina/presidio-asic/presidio.c b/board/cortina/presidio-asic/presidio.c
index b4fa01f..d547b60 100644
--- a/board/cortina/presidio-asic/presidio.c
+++ b/board/cortina/presidio-asic/presidio.c
@@ -14,7 +14,7 @@
 #include <asm/psci.h>
 #include <cpu_func.h>
 #include <asm/armv8/mmu.h>
-
+#include <dm/uclass.h>
 DECLARE_GLOBAL_DATA_PTR;
 
 #define CA_PERIPH_BASE                  0xE0000000UL
@@ -70,9 +70,23 @@ static noinline int invoke_psci_fn_smc(u64 function_id, u64 arg0, u64 arg1,
 	return function_id;
 }
 
+#ifdef CONFIG_CORTINA_SFLASH
+static int init_sflash(void)
+{
+	struct udevice *dev;
+
+	uclass_first_device(UCLASS_SPI, &dev);
+
+	return 0;
+}
+#endif
+
 int board_early_init_r(void)
 {
 	dcache_disable();
+#ifdef CONFIG_CORTINA_SFLASH
+	init_sflash();
+#endif
 	return 0;
 }
 
diff --git a/configs/cortina_presidio-asic-spi-nand_defconfig b/configs/cortina_presidio-asic-spi-nand_defconfig
new file mode 100644
index 0000000..515ad22
--- /dev/null
+++ b/configs/cortina_presidio-asic-spi-nand_defconfig
@@ -0,0 +1,48 @@
+CONFIG_ARM=y
+# CONFIG_SYS_ARCH_TIMER is not set
+CONFIG_TARGET_PRESIDIO_ASIC=y
+CONFIG_SYS_TEXT_BASE=0x04000000
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DM_GPIO=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_IDENT_STRING="Presidio-SoC"
+CONFIG_SHOW_BOOT_PROGRESS=y
+CONFIG_BOOTDELAY=3
+CONFIG_LOGLEVEL=7
+CONFIG_BOARD_EARLY_INIT_R=y
+CONFIG_SYS_PROMPT="G3#"
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_SF_TEST=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_WDT=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIMER=y
+CONFIG_CMD_SMC=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_DEFAULT_DEVICE_TREE="ca-presidio-engboard"
+# CONFIG_NET is not set
+CONFIG_DM=y
+CONFIG_CORTINA_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_CA=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_CORTINA=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_DM_SERIAL=y
+CONFIG_CORTINA_UART=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_CORTINA_SFLASH=y
+CONFIG_WDT=y
+CONFIG_WDT_CORTINA=y
diff --git a/configs/cortina_presidio-asic-spi-nor_defconfig b/configs/cortina_presidio-asic-spi-nor_defconfig
new file mode 100644
index 0000000..d7ecec3
--- /dev/null
+++ b/configs/cortina_presidio-asic-spi-nor_defconfig
@@ -0,0 +1,59 @@
+CONFIG_ARM=y
+# CONFIG_SYS_ARCH_TIMER is not set
+CONFIG_TARGET_PRESIDIO_ASIC=y
+CONFIG_SYS_TEXT_BASE=0x04000000
+CONFIG_ENV_SIZE=0x20000
+CONFIG_DM_GPIO=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_IDENT_STRING="Presidio-SoC"
+CONFIG_SHOW_BOOT_PROGRESS=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_R=y
+CONFIG_SYS_PROMPT="G3#"
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_SF_TEST=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_WDT=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIMER=y
+CONFIG_CMD_SMC=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_DEFAULT_DEVICE_TREE="ca-presidio-engboard"
+# CONFIG_NET is not set
+CONFIG_DM=y
+CONFIG_CORTINA_GPIO=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_CA=y
+CONFIG_LED=y
+CONFIG_LED_CORTINA=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_CORTINA=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH_ATMEL=y
+CONFIG_SPI_FLASH_EON=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_ISSI=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_SST=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_DM_SERIAL=y
+CONFIG_CORTINA_UART=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_CORTINA_SFLASH=y
+CONFIG_WDT=y
+CONFIG_WDT_CORTINA=y
