From 721a161bc19a8da58037cb96f24b98a354130017 Mon Sep 17 00:00:00 2001
From: dongheng <Dong Heng>
Date: Tue, 5 Mar 2019 11:50:33 +0800
Subject: [PATCH] feat(esp8266): Add option to configurate CPU frequncy to
 160MHz before "app_main"

---
 components/esp8266/Kconfig          | 17 +++++++++++++++++
 components/esp8266/source/startup.c |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/components/esp8266/Kconfig b/components/esp8266/Kconfig
index 1914c46e..f3647a45 100644
--- a/components/esp8266/Kconfig
+++ b/components/esp8266/Kconfig
@@ -1,5 +1,22 @@
 menu "ESP8266-specific"
 
+choice ESP8266_DEFAULT_CPU_FREQ_MHZ
+    prompt "CPU frequency"
+    default ESP8266_DEFAULT_CPU_FREQ_80
+    help
+        CPU frequency to be set on application startup.
+
+    config ESP8266_DEFAULT_CPU_FREQ_80
+        bool "80 MHz"
+    config ESP8266_DEFAULT_CPU_FREQ_160
+        bool "160 MHz"
+endchoice
+
+config ESP8266_DEFAULT_CPU_FREQ_MHZ
+    int
+    default 80 if ESP8266_DEFAULT_CPU_FREQ_80
+    default 160 if ESP8266_DEFAULT_CPU_FREQ_160
+
 choice NEWLIB_STDOUT_LINE_ENDING
     prompt "Line ending for UART output"
     default NEWLIB_STDOUT_LINE_ENDING_CRLF
diff --git a/components/esp8266/source/startup.c b/components/esp8266/source/startup.c
index 683bd6e8..370c0005 100644
--- a/components/esp8266/source/startup.c
+++ b/components/esp8266/source/startup.c
@@ -81,6 +81,10 @@ static void user_init_entry(void *param)
     assert(esp_pthread_init() == 0);
 #endif
 
+#ifdef CONFIG_ESP8266_DEFAULT_CPU_FREQ_160
+    rtc_clk_cpu_freq_set(RTC_CPU_FREQ_160M);
+#endif
+
     app_main();
 
     wifi_task_delete(NULL);