From 7342974b173f28ca16eba3f8c87f639e642ef788 Mon Sep 17 00:00:00 2001
From: Hauke Petersen <hauke.petersen@fu-berlin.de>
Date: Mon, 12 Jun 2017 17:32:54 +0200
Subject: [PATCH] cpu/ezr32wg/gpio: do not clear output pin on init

---
 cpu/ezr32wg/periph/gpio.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cpu/ezr32wg/periph/gpio.c b/cpu/ezr32wg/periph/gpio.c
index 34e3b1ffeb..2ab3c3e62c 100644
--- a/cpu/ezr32wg/periph/gpio.c
+++ b/cpu/ezr32wg/periph/gpio.c
@@ -60,17 +60,21 @@ int gpio_init(gpio_t pin, gpio_mode_t mode)
     GPIO_P_TypeDef *port = _port(pin);
     uint32_t pin_pos = _pin_pos(pin);
 
+    if (mode == GPIO_IN_PD) {
+        return -1;
+    }
+
     /* enable power for the GPIO module */
     CMU->HFPERCLKEN0 |= CMU_HFPERCLKEN0_GPIO;
 
     /* configure the mode */
     port->MODE[pin_pos >> 3] &= ~(0xf << ((pin_pos & 0x7) * 4));
     port->MODE[pin_pos >> 3] |= (mode << ((pin_pos & 0x7) * 4));
-    /* reset output register */
-    port->DOUTCLR = (1 << pin_pos);
     /* if input with pull-up, set the data out register */
     if (mode == GPIO_IN_PU) {
         port->DOUTSET = (1 << pin_pos);
+    } else if (mode == GPIO_IN) {
+        port->DOUTCLR = (1 << pin_pos);
     }
 
     return 0;