From 379fae940b1ded3ac0a655e4ba48d997e7b1b09f Mon Sep 17 00:00:00 2001
From: Alexey Zholtikov <git@zh.com.ru>
Date: Sun, 30 Nov 2025 22:43:44 +0300
Subject: [PATCH] doc: updated readme

---
 README.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README.md b/README.md
index dd46d6b..b2e879a 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,14 @@
 2. All the INT GPIO's on the extenders must be connected to the one GPIO on ESP.
 3. The input GPIO's are always pullup to the power supply.
 
+## Attention
+
+For correct operation, please enable the following settings in the menuconfig:
+
+```text
+GPIO_CTRL_FUNC_IN_IRAM
+```
+
 ## Dependencies
 
 1. [zh_vector](http://git.zh.com.ru/esp_components/zh_vector)