From fe2055012782122c05a05b8f7ce80d5e38d3b24d Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Wed, 4 Mar 2026 22:50:13 -1000
Subject: [PATCH] Add comment explaining why no IRAM_ATTR needed on RP2040

---
 esphome/components/socket/lwip_raw_tcp_impl.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/esphome/components/socket/lwip_raw_tcp_impl.cpp b/esphome/components/socket/lwip_raw_tcp_impl.cpp
index e2545b8fa7..6f5bcc1023 100644
--- a/esphome/components/socket/lwip_raw_tcp_impl.cpp
+++ b/esphome/components/socket/lwip_raw_tcp_impl.cpp
@@ -94,6 +94,8 @@ void socket_delay(uint32_t ms) {
     cancel_alarm(alarm);
 }
 
+// No IRAM_ATTR equivalent needed: on RP2040, CYW43 async_context runs LWIP
+// callbacks via pendsv (not hard IRQ), so they execute from flash safely.
 void socket_wake() {
   s_socket_woke = true;
   // Wake the main loop from __wfe() sleep. __sev() is a global event that