diff --git a/drivers/sound/sound-uclass.c b/drivers/sound/sound-uclass.c
index 71e753c..2b83626 100644
--- a/drivers/sound/sound-uclass.c
+++ b/drivers/sound/sound-uclass.c
@@ -53,7 +53,7 @@
 	}
 
 	sound_create_square_wave(i2s_uc_priv->samplingrate, data, data_size,
-				 frequency_hz);
+				 frequency_hz, i2s_uc_priv->channels);
 
 	while (msecs >= 1000) {
 		ret = sound_play(dev, data, data_size);
diff --git a/drivers/sound/sound.c b/drivers/sound/sound.c
index 4f0ad0d..dd3f9db 100644
--- a/drivers/sound/sound.c
+++ b/drivers/sound/sound.c
@@ -8,7 +8,7 @@
 #include <sound.h>
 
 void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
-			      uint freq)
+			      uint freq, uint channels)
 {
 	const unsigned short amplitude = 16000; /* between 1 and 32767 */
 	const int period = freq ? sample_rate / freq : 0;
@@ -21,14 +21,17 @@
 		size--;
 
 	while (size) {
-		int i;
+		int i, j;
+
 		for (i = 0; size && i < half; i++) {
 			size -= 2;
-			*data++ = amplitude;
+			for (j = 0; j < channels; j++)
+				*data++ = amplitude;
 		}
 		for (i = 0; size && i < period - half; i++) {
 			size -= 2;
-			*data++ = -amplitude;
+			for (j = 0; j < channels; j++)
+				*data++ = -amplitude;
 		}
 	}
 }
diff --git a/include/sound.h b/include/sound.h
index 02acefd..b7959cc 100644
--- a/include/sound.h
+++ b/include/sound.h
@@ -37,13 +37,14 @@
 /**
  * Generates square wave sound data for 1 second
  *
- * @param sample_rate   Sample rate in Hz
- * @param data          data buffer pointer
- * @param size          size of the buffer in bytes
- * @param freq          frequency of the wave
+ * @sample_rate: Sample rate in Hz
+ * @data: data buffer pointer
+ * @size: size of the buffer in bytes
+ * @freq: frequency of the wave
+ * @channels: Number of channels to use
  */
 void sound_create_square_wave(uint sample_rate, unsigned short *data, int size,
-			      uint freq);
+			      uint freq, uint channels);
 
 /*
  * The sound uclass brings together a data transport (currently only I2C) and a