diff --git a/cpu/atmega_common/include/periph_cpu_common.h b/cpu/atmega_common/include/periph_cpu_common.h
index bf6627072f..3b5a5756b9 100644
--- a/cpu/atmega_common/include/periph_cpu_common.h
+++ b/cpu/atmega_common/include/periph_cpu_common.h
@@ -231,6 +231,16 @@ typedef enum {
     GPIO_TRIGGER_LEVEL_HIGH     = 0xff, /**< not supported */
 } gpio_irq_trig_t;
 
+#define HAVE_GPIO_STATE_T
+typedef enum {
+    GPIO_INPUT,
+    GPIO_OUTPUT_PUSH_PULL,
+    GPIO_OUTPUT_OPEN_DRAIN,     /**< not supported */
+    GPIO_OUTPUT_OPEN_SOURCE,    /**< not supported */
+    GPIO_USED_BY_PERIPHERAL,    /**< not supported */
+    GPIO_DISCONNECT             = GPIO_INPUT,
+} gpio_state_t;
+
 #define HAVE_GPIO_LL_PREPARE_WRITE_ALL_PINS
 #define HAVE_GPIO_LL_PREPARE_WRITE
 
diff --git a/cpu/atmega_common/periph/gpio_ll.c b/cpu/atmega_common/periph/gpio_ll.c
index 3bd5eec653..f47beb5a60 100644
--- a/cpu/atmega_common/periph/gpio_ll.c
+++ b/cpu/atmega_common/periph/gpio_ll.c
@@ -40,7 +40,7 @@ static void _set_dir(gpio_port_t port, uint8_t pin, bool output)
         p->ddr |= 1U << pin;
     }
     else {
-        p-> ddr &= ~(1U << pin);
+        p->ddr &= ~(1U << pin);
     }
 }
 
@@ -59,8 +59,7 @@ static void _set_pull_config(gpio_port_t port, uint8_t pin, gpio_pull_t pull)
 int gpio_ll_init(gpio_port_t port, uint8_t pin, gpio_conf_t conf)
 {
     if ((conf.pull > GPIO_PULL_UP)
-        || (conf.state == GPIO_OUTPUT_OPEN_DRAIN)
-        || (conf.state == GPIO_OUTPUT_OPEN_SOURCE)) {
+        || (conf.state > GPIO_OUTPUT_PUSH_PULL)) {
         return -ENOTSUP;
     }