From 052693e4495354daabb4d61e97121283334c6665 Mon Sep 17 00:00:00 2001
From: Angus Gratton <angus@redyak.com.au>
Date: Tue, 23 Jul 2024 11:09:27 +1000
Subject: [PATCH] esp32/boards: Reduce IRAM usage.

Disable unnecessary IRAM ISR functionality.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
---
 ports/esp32/boards/sdkconfig.base | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ports/esp32/boards/sdkconfig.base b/ports/esp32/boards/sdkconfig.base
index fef25fe308..ca36206d1b 100644
--- a/ports/esp32/boards/sdkconfig.base
+++ b/ports/esp32/boards/sdkconfig.base
@@ -99,6 +99,10 @@ CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions-4MiB.csv"
 # To reduce iRAM usage
 CONFIG_ESP32_WIFI_IRAM_OPT=n
 CONFIG_ESP32_WIFI_RX_IRAM_OPT=n
+CONFIG_SPI_MASTER_ISR_IN_IRAM=n
+CONFIG_SPI_SLAVE_ISR_IN_IRAM=n
+CONFIG_ESP_EVENT_POST_FROM_IRAM_ISR=n
+CONFIG_PERIPH_CTRL_FUNC_IN_IRAM=n
 
 # Legacy ADC Calibration Configuration
 # Only on: ESP32