diff --git a/boards/adafruit-itsybitsy-m4/include/periph_conf.h b/boards/adafruit-itsybitsy-m4/include/periph_conf.h
index d12fc43926..55b75bd1e4 100644
--- a/boards/adafruit-itsybitsy-m4/include/periph_conf.h
+++ b/boards/adafruit-itsybitsy-m4/include/periph_conf.h
@@ -238,16 +238,15 @@ static const sam0_common_usb_config_t sam_usbdev_config[] = {
 
 #define ADC_NEG_INPUT                       ADC_INPUTCTRL_MUXNEG(0x18u)
 #define ADC_REF_DEFAULT                     ADC_REFCTRL_REFSEL_INTVCC1
-#define ADC_DEV                             ADC0
 
 static const adc_conf_chan_t adc_channels[] = {
-    /* port, pin, muxpos */
-    {GPIO_PIN(PA, 2), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN0)},
-    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5)},
-    {GPIO_PIN(PB, 8), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN2)},
-    {GPIO_PIN(PB, 9), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN3)},
-    {GPIO_PIN(PA, 4), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN4)},
-    {GPIO_PIN(PA, 6), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN6)},
+    /* port, pin, muxpos, dev */
+    {GPIO_PIN(PA, 2), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN0), ADC0},
+    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5), ADC0},
+    {GPIO_PIN(PB, 8), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN2), ADC0},
+    {GPIO_PIN(PB, 9), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN3), ADC0},
+    {GPIO_PIN(PA, 4), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN4), ADC0},
+    {GPIO_PIN(PA, 6), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN6), ADC0},
 };
 
 #define ADC_NUMOF                           ARRAY_SIZE(adc_channels)
diff --git a/boards/adafruit-pybadge/include/periph_conf.h b/boards/adafruit-pybadge/include/periph_conf.h
index fb74bab8d0..15a4172c59 100644
--- a/boards/adafruit-pybadge/include/periph_conf.h
+++ b/boards/adafruit-pybadge/include/periph_conf.h
@@ -269,13 +269,12 @@ static const sam0_common_usb_config_t sam_usbdev_config[] = {
 
 #define ADC_NEG_INPUT                       ADC_INPUTCTRL_MUXNEG(0x18u)
 #define ADC_REF_DEFAULT                     ADC_REFCTRL_REFSEL_INTVCC1
-#define ADC_DEV                             ADC1
 
 static const adc_conf_chan_t adc_channels[] = {
-    /* port, pin, muxpos */
-    {GPIO_PIN(PB, 8), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN2)}, /* A2 */
-    {GPIO_PIN(PB, 9), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN3)}, /* A3 */
-    {GPIO_PIN(PB, 4), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN6)}, /* A7 - Light sensor */
+    /* port, pin, muxpos, dev */
+    {GPIO_PIN(PB, 8), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN2), ADC1},   /* A2 */
+    {GPIO_PIN(PB, 9), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN3), ADC1},   /* A3 */
+    {GPIO_PIN(PB, 4), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN6), ADC1},   /* A7 - Light sensor */
 };
 
 #define ADC_NUMOF                           ARRAY_SIZE(adc_channels)
diff --git a/boards/same54-xpro/include/periph_conf.h b/boards/same54-xpro/include/periph_conf.h
index 10aad210c7..fbd66a1024 100644
--- a/boards/same54-xpro/include/periph_conf.h
+++ b/boards/same54-xpro/include/periph_conf.h
@@ -337,13 +337,12 @@ static const sam0_common_usb_config_t sam_usbdev_config[] = {
 
 #define ADC_NEG_INPUT                       ADC_INPUTCTRL_MUXNEG(0x18u)
 #define ADC_REF_DEFAULT                     ADC_REFCTRL_REFSEL_INTVCC1
-#define ADC_DEV                             ADC0
 
 static const adc_conf_chan_t adc_channels[] = {
-    /* port, pin, muxpos */
-    {GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN1)},
-    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5)},
-    {GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN7)}
+    /* port, pin, muxpos, dev */
+    {GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN1), ADC0},
+    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5), ADC0},
+    {GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN7), ADC0}
 };
 
 #define ADC_NUMOF                           ARRAY_SIZE(adc_channels)