diff --git a/libraries/AP_HAL_ChibiOS/hwdef/AIRLink/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/AIRLink/hwdef.dat
index 7de3644c2e..be9ce9f633 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/AIRLink/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/AIRLink/hwdef.dat
@@ -83,8 +83,12 @@ PD15 VDD_3V3_SENSORS2_EN OUTPUT HIGH
 PE7 VDD_3V3_SENSORS3_EN OUTPUT HIGH
 PG8 VDD_3V3_SENSORS4_EN OUTPUT HIGH
 
+# enable peripherals power pin
 PF12 VDD_5V_HIPOWER_EN OUTPUT HIGH
 
+# enable LTE module power pin
+PG4 VDD_3V5_LTE_EN OUTPUT HIGH
+
 # drdy pins
 PF2  DRDY4_ICM20602 INPUT
 PH12 MPU_FPC_DRDY INPUT
diff --git a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32_util.c b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32_util.c
index 95050f33cf..aa85c75d33 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/common/stm32_util.c
+++ b/libraries/AP_HAL_ChibiOS/hwdef/common/stm32_util.c
@@ -298,7 +298,7 @@ void get_rtc_backup(uint8_t idx, uint32_t *v, uint8_t n)
 */
 void peripheral_power_enable(void)
 {
-#if defined(HAL_GPIO_PIN_nVDD_5V_PERIPH_EN) || defined(HAL_GPIO_PIN_nVDD_5V_HIPOWER_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS_EN)|| defined(HAL_GPIO_PIN_VDD_3V3_SENSORS2_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS3_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS4_EN) || defined(HAL_GPIO_PIN_nVDD_3V3_SD_CARD_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SD_CARD_EN)
+#if defined(HAL_GPIO_PIN_nVDD_5V_PERIPH_EN) || defined(HAL_GPIO_PIN_nVDD_5V_HIPOWER_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS_EN)|| defined(HAL_GPIO_PIN_VDD_3V3_SENSORS2_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS3_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SENSORS4_EN) || defined(HAL_GPIO_PIN_nVDD_3V3_SD_CARD_EN) || defined(HAL_GPIO_PIN_VDD_3V3_SD_CARD_EN) || defined(HAL_GPIO_PIN_VDD_3V5_LTE_EN)
     // we don't know what state the bootloader had the CTS pin in, so
     // wait here with it pulled up from the PAL table for enough time
     // for the radio to be definately powered down
@@ -336,6 +336,9 @@ void peripheral_power_enable(void)
 #ifdef HAL_GPIO_PIN_VDD_3V3_SD_CARD_EN
     // others need it active high
     palWriteLine(HAL_GPIO_PIN_VDD_3V3_SD_CARD_EN, 1);
+#endif
+#ifdef HAL_GPIO_PIN_VDD_3V5_LTE_EN
+    palWriteLine(HAL_GPIO_PIN_VDD_3V5_LTE_EN, 1);
 #endif
     for (i=0; i<20; i++) {
         // give 20ms for sensors to settle