From: Ivan Grokhotkov <ivan@espressif.com>
Date: Wed, 18 Oct 2017 12:04:40 +0000 (+0800)
Subject: sleep: don't power down VDD_SDIO in light sleep if SPIRAM is enabled
X-Git-Tag: v3.1-dev~148^2~2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ae7404972c53d3b415d6b548927854846a9abb51;p=esp-idf

sleep: don't power down VDD_SDIO in light sleep if SPIRAM is enabled
---

diff --git a/components/esp32/sleep_modes.c b/components/esp32/sleep_modes.c
index 6924b2ec28..6927716c62 100644
--- a/components/esp32/sleep_modes.c
+++ b/components/esp32/sleep_modes.c
@@ -231,16 +231,19 @@ esp_err_t esp_light_sleep_start()
     // Decide which power domains can be powered down
     uint32_t pd_flags = get_power_down_flags();
 
-    // Decide if flash needs to be powered down;
-    // If it needs to be powered down, adjust sleep time
+    // Decide if VDD_SDIO needs to be powered down;
+    // If it needs to be powered down, adjust sleep time.
     const uint32_t flash_enable_time_us = VDD_SDIO_POWERUP_TO_FLASH_READ_US
                                           + CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY;
 
+    // Don't power down VDD_SDIO if pSRAM is used.
+#ifndef CONFIG_SPIRAM_SUPPORT
     if (s_config.sleep_duration > FLASH_PD_MIN_SLEEP_TIME_US &&
-        s_config.sleep_duration > flash_enable_time_us) {
+            s_config.sleep_duration > flash_enable_time_us) {
         pd_flags |= RTC_SLEEP_PD_VDDSDIO;
         s_config.sleep_duration -= flash_enable_time_us;
     }
+#endif //CONFIG_SPIRAM_SUPPORT
 
     // Safety net: enable WDT in case exit from light sleep fails
     rtc_wdt_enable(1000);