boards/xtensa: add option to disable SPI Flash MTD automatic bringup

The ESP32*_SPIFLASH_AUTO_BRINGUP option allows disabling automatic bringup.
This causes /dev/mtdblock0 to show up instead of always mounting a file system.

Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>

boards/xtensa/esp32/common/Kconfig

@@ -19,10 +19,18 @@ config ESP32_QEMU_IMAGE
 	---help---
 		Create a binary flash image used for QEMU.
 
-choice ESP32_SPIFLASH_FS
+config ESP32_SPIFLASH_AUTO_BRINGUP
-	prompt "Mount SPI Flash MTD on bring-up"
+	bool "Automatic mount of SPI Flash MTD"
-	default ESP32_SPIFLASH_SMARTFS
+	default y
 	depends on ESP32_SPIFLASH
+	---help---
+		Auto bring-up the SPI Flash MTD on board bring-up.
+		If not selected, the MTD will be registered as a device node on /dev.
+
+choice ESP32_SPIFLASH_FS
+	prompt "File system to mount on SPI Flash MTD"
+	default ESP32_SPIFLASH_SMARTFS
+	depends on ESP32_SPIFLASH_AUTO_BRINGUP
 	optional
 	---help---
 		Mount the SPI Flash MTD with the selected File System format on board

boards/xtensa/esp32s2/common/Kconfig

@@ -12,10 +12,18 @@ config ESP32S2_MERGE_BINS
 		This is only useful when the path to binary files (e.g. bootloader)
 		is provided via the ESPTOOL_BINDIR variable.
 
+config ESP32S2_SPIFLASH_AUTO_BRINGUP
+	bool "Automatic mount of SPI Flash MTD"
+	default y
+	depends on ESP32S2_SPIFLASH
+	---help---
+		Auto bring-up the SPI Flash MTD on board bring-up.
+		If not selected, the MTD will be registered as a device node on /dev.
+
 choice ESP32S2_SPIFLASH_FS
-	prompt "Mount SPI Flash MTD on bring-up"
+	prompt "File system to mount on SPI Flash MTD"
 	default ESP32S2_SPIFLASH_SMARTFS
-	depends on ESPRESSIF_SPIFLASH
+	depends on ESP32S2_SPIFLASH_AUTO_BRINGUP
 	optional
 	---help---
 		Mount the SPI Flash MTD with the selected File System format on board

boards/xtensa/esp32s2/esp32s2-saola-1/configs/spiflash/defconfig

@@ -19,7 +19,6 @@ CONFIG_ARCH_STACKDUMP=y
 CONFIG_ARCH_XTENSA=y
 CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_BUILTIN=y
-CONFIG_ESP32S2_SPIFLASH_SMARTFS=y
 CONFIG_ESP32S2_UART0=y
 CONFIG_ESPRESSIF_SPIFLASH=y
 CONFIG_FS_PROCFS=y

boards/xtensa/esp32s2/esp32s2-saola-1/configs/sta_softap/defconfig

@@ -22,7 +22,6 @@ CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_BUILTIN=y
 CONFIG_DRIVERS_IEEE80211=y
 CONFIG_DRIVERS_WIRELESS=y
-CONFIG_ESP32S2_SPIFLASH_SPIFFS=y
 CONFIG_ESP32S2_UART0=y
 CONFIG_ESPRESSIF_SPIFLASH=y
 CONFIG_ESPRESSIF_WIFI=y

boards/xtensa/esp32s2/esp32s2-saola-1/configs/wifi/defconfig

@@ -22,7 +22,6 @@ CONFIG_BOARD_LOOPSPERMSEC=16717
 CONFIG_BUILTIN=y
 CONFIG_DRIVERS_IEEE80211=y
 CONFIG_DRIVERS_WIRELESS=y
-CONFIG_ESP32S2_SPIFLASH_SPIFFS=y
 CONFIG_ESP32S2_UART0=y
 CONFIG_ESPRESSIF_SPIFLASH=y
 CONFIG_ESPRESSIF_WIFI=y

boards/xtensa/esp32s3/common/Kconfig

@@ -49,10 +49,18 @@ config ESP32S3_STORAGE_MTD_SIZE
 	---help---
 		MTD size in SPI Flash.
 
-choice ESP32S3_SPIFLASH_FS
+config ESP32S3_SPIFLASH_AUTO_BRINGUP
-	prompt "Mount SPI Flash MTD on bring-up"
+	bool "Automatic mount of SPI Flash MTD"
-	default ESP32S3_SPIFLASH_SMARTFS
+	default y
 	depends on ESP32S3_MTD
+	---help---
+		Auto bring-up the SPI Flash MTD on board bring-up.
+		If not selected, the MTD will be registered as a device node on /dev.
+
+choice ESP32S3_SPIFLASH_FS
+	prompt "File system to mount on SPI Flash MTD"
+	default ESP32S3_SPIFLASH_SMARTFS
+	depends on ESP32S3_SPIFLASH_AUTO_BRINGUP
 	optional
 	---help---
 		Mount the SPI Flash MTD with the selected File System format on board