From 59db01e8d7beeac650944f8bcdd14c1a9430cb33 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sat, 28 Feb 2026 11:15:17 -1000
Subject: [PATCH 1/2] Fix IRAM_ATTR not defined on LibreTiny (bk72xx)

IRAM_ATTR is defined by esp_attr.h on ESP32 but not on LibreTiny.
Add a no-op fallback in the C file since hal.h (which defines it
for C++) cannot be included from C.
---
 esphome/core/lwip_fast_select.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/esphome/core/lwip_fast_select.c b/esphome/core/lwip_fast_select.c
index 4e7ab07125b..da0f1f337a4 100644
--- a/esphome/core/lwip_fast_select.c
+++ b/esphome/core/lwip_fast_select.c
@@ -126,6 +126,12 @@
 
 #include <stddef.h>
 
+// IRAM_ATTR is defined by esp_attr.h (included via FreeRTOS headers) on ESP32.
+// On LibreTiny it's not defined — provide a no-op fallback.
+#ifndef IRAM_ATTR
+#define IRAM_ATTR
+#endif
+
 // Compile-time verification of thread safety assumptions.
 // On ESP32 (Xtensa/RISC-V) and LibreTiny (ARM Cortex-M), naturally-aligned
 // reads/writes up to 32 bits are atomic.

From e7fc69e45357d08aa324e9b5567a8ff33380154d Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sat, 28 Feb 2026 12:26:31 -1000
Subject: [PATCH 2/2] reorder

---
 esphome/components/uart/uart_component_esp_idf.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/esphome/components/uart/uart_component_esp_idf.h b/esphome/components/uart/uart_component_esp_idf.h
index 7bb25f8dfff..631bf54cd56 100644
--- a/esphome/components/uart/uart_component_esp_idf.h
+++ b/esphome/components/uart/uart_component_esp_idf.h
@@ -3,11 +3,11 @@
 #ifdef USE_ESP32
 
 #include <driver/uart.h>
+#include "esphome/core/component.h"
+#include "uart_component.h"
 #ifdef USE_UART_WAKE_LOOP_ON_RX
 #include <driver/uart_select.h>
 #endif
-#include "esphome/core/component.h"
-#include "uart_component.h"
 
 namespace esphome::uart {