diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index bab7d34cf585..5f181b89838a 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -41,6 +41,7 @@
 
 /**
  * struct codec_priv - CODEC private data
+ * @mclk: Main clock of the CODEC
  * @mclk_freq: Clock rate of MCLK
  * @free_freq: Clock rate of MCLK for hw_free()
  * @mclk_id: MCLK (or main clock) id for set_sysclk()