diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index 2e7ac8ab71bb..1e755a716c63 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -171,6 +171,8 @@
  * @reg_dac_txdata: TX FIFO offset for DMA config.
  * @has_reset: SoC needs reset deasserted.
  * @val_fctl_ftx: TX FIFO flush bitmask.
+ * @mclk_multiplier: ratio of internal MCLK divider
+ * @tx_clk_name: name of TX module clock if split clock design
  */
 struct sun4i_spdif_quirks {
 	unsigned int reg_dac_txdata;