diff --git a/arch/arm/configs/rk3506_defconfig b/arch/arm/configs/rk3506_defconfig
index 8f4cc88f48f7..9b8e7d6f9ecd 100644
--- a/arch/arm/configs/rk3506_defconfig
+++ b/arch/arm/configs/rk3506_defconfig
@@ -194,6 +194,7 @@ CONFIG_SND=y
 # CONFIG_SND_DRIVERS is not set
 # CONFIG_SND_ARM is not set
 CONFIG_SND_SOC=y
+CONFIG_SND_SOC_DYNAMIC_DMA_CHAN=y
 CONFIG_SND_SOC_ROCKCHIP=y
 CONFIG_SND_SOC_ROCKCHIP_PDM_V2=y
 CONFIG_SND_SOC_ROCKCHIP_SAI=y