boards: Reduce the Fire's SPIRAM rate.

For compatibility with older versions of Fire, a 40Mhz SPIRAM is required.

Signed-off-by: lbuque <[email protected]>

Author: lbuque

m5stack/boards/M5STACK_Fire/mpconfigboard.cmake

@@ -13,7 +13,7 @@ set(SDKCONFIG_DEFAULTS
     ./boards/sdkconfig.240mhz
     ./boards/sdkconfig.disable_iram
     ./boards/M5STACK_Fire/sdkconfig.board
-    ./boards/sdkconfig.spiram
+    # ./boards/sdkconfig.spiram
 )
 
 # If not enable LVGL, ignore this...

m5stack/boards/M5STACK_Fire/sdkconfig.board

@@ -7,10 +7,26 @@ CONFIG_MBEDTLS_INTERNAL_MEM_ALLOC=n
 CONFIG_MBEDTLS_CUSTOM_MEM_ALLOC=y
 
 # Flash
-CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
-CONFIG_ESPTOOLPY_FLASHFREQ="80m"
+#CONFIG_ESPTOOLPY_FLASHFREQ_80M=y
+#CONFIG_ESPTOOLPY_FLASHFREQ="80m"
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 
+
+CONFIG_SPIRAM=y
+CONFIG_ESP32_SPIRAM_SUPPORT=y
+CONFIG_SPIRAM_CACHE_WORKAROUND=y
+CONFIG_SPIRAM_IGNORE_NOTFOUND=y
+#CONFIG_SPIRAM_USE_MEMMAP=y
+
+CONFIG_COMPILER_OPTIMIZATION_SIZE=y
+CONFIG_COMPILER_OPTIMIZATION_CHECKS_SILENT=y
+CONFIG_RINGBUF_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
+CONFIG_FREERTOS_PLACE_SNAPSHOT_FUNS_INTO_FLASH=y
+
+CONFIG_SPIRAM_SPEED_40M=y
+CONFIG_SPIRAM_SPEED=40
+
 # MicroPython on ESP32, ESP IDF configuration with SPIRAM support
 
 CONFIG_ESP32_SPIRAM_SUPPORT=y