diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h
index 78f0654d9c3d9006cd336607c5db8e5a84b77b54..df76ac8e658c342f8b59c5664eb4ef36929ce2d8 100644
--- a/include/media/tuner-types.h
+++ b/include/media/tuner-types.h
@@ -171,6 +171,21 @@ struct tuner_params {
 	struct tuner_range *ranges;
 };
 
+/**
+ * struct tunertype - describes the known tuners.
+ *
+ * @name:	string with the tuner's name.
+ * @count:	size of &struct tuner_params array.
+ * @params:	pointer to &struct tuner_params array.
+ *
+ * @min:	minimal tuner frequency, in 62.5 kHz step.
+ *		should be multiplied to 16 to convert to MHz.
+ * @max:	minimal tuner frequency, in 62.5 kHz step.
+ *		Should be multiplied to 16 to convert to MHz.
+ * @stepsize:	frequency step, in Hz.
+ * @initdata:	optional byte sequence to initialize the tuner.
+ * @sleepdata:	optional byte sequence to power down the tuner.
+ */
 struct tunertype {
 	char *name;
 	unsigned int count;