From c57bce96b6394bfc5cb8c25b7db48a6c5517140e Mon Sep 17 00:00:00 2001
From: Pierre-Marie Ancele <pm.ancele@catie.fr>
Date: Wed, 22 Feb 2017 16:44:28 +0100
Subject: [PATCH] Fix GPIOG usage of STM32L4 by activating VDDIO2 power supply

---
 targets/TARGET_STM/gpio_api.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/targets/TARGET_STM/gpio_api.c b/targets/TARGET_STM/gpio_api.c
index bbcf53fc4c..e4075cfc4a 100644
--- a/targets/TARGET_STM/gpio_api.c
+++ b/targets/TARGET_STM/gpio_api.c
@@ -73,6 +73,10 @@ GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx) {
 #endif
 #if defined GPIOG_BASE
         case PortG:
+#if defined STM32L4
+            __HAL_RCC_PWR_CLK_ENABLE();
+            HAL_PWREx_EnableVddIO2();
+#endif
             gpio_add = GPIOG_BASE;
             __GPIOG_CLK_ENABLE();
             break;