diff --git a/sound/soc/rockchip/Kconfig b/sound/soc/rockchip/Kconfig
index 186c40b7048d..efd5b797a1c2 100644
--- a/sound/soc/rockchip/Kconfig
+++ b/sound/soc/rockchip/Kconfig
@@ -6,14 +6,6 @@ config SND_SOC_ROCKCHIP
 	  the Rockchip SoCs' Audio interfaces. You will also need to
 	  select the audio interfaces to support below.
 
-config SND_SOC_ROCKCHIP_PREALLOC_BUFFER_SIZE
-	int "Default prealloc buffer size (kbytes)"
-	depends on SND_SOC_ROCKCHIP
-	default "512"
-	help
-	  The default value is 512 kilobytes. Only change this if you know
-	  what you are doing.
-
 config SND_SOC_ROCKCHIP_AUDIO_PWM
 	tristate "Rockchip Audio PWM Driver"
 	depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP