esp32/boards: Apply additional IRAM savings.

Saves approx 19KB on ESP32-C6 and 11KB on ESP32-C2, meaning IDF V5.5.1
builds now have more free RAM than V5.4.2.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <[email protected]>

Author: projectgus

ports/esp32/boards/sdkconfig.base

@@ -99,9 +99,15 @@ CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-4MiBplus.csv"
 
-# To reduce iRAM usage
-CONFIG_ESP32_WIFI_IRAM_OPT=n
-CONFIG_ESP32_WIFI_RX_IRAM_OPT=n
+# To reduce IRAM usage
+CONFIG_ESP_WIFI_IRAM_OPT=n
+CONFIG_ESP_WIFI_EXTRA_IRAM_OPT=n
+CONFIG_ESP_WIFI_RX_IRAM_OPT=n
+CONFIG_ESP_WIFI_SLP_IRAM_OPT=n
+CONFIG_ESP_PHY_IRAM_OPT=n
+CONFIG_I2C_MASTER_ISR_HANDLER_IN_IRAM=n
+CONFIG_RMT_TX_ISR_HANDLER_IN_IRAM=n
+CONFIG_RMT_RX_ISR_HANDLER_IN_IRAM=n
 CONFIG_SPI_MASTER_ISR_IN_IRAM=n
 CONFIG_SPI_SLAVE_ISR_IN_IRAM=n
 CONFIG_ESP_EVENT_POST_FROM_IRAM_ISR=n