diff --git a/arch/arm/configs/rk3308_linux_aarch32_debug_defconfig b/arch/arm/configs/rk3308_linux_aarch32_debug_defconfig
index 973cee6d3482..2145ff8f4ebc 100644
--- a/arch/arm/configs/rk3308_linux_aarch32_debug_defconfig
+++ b/arch/arm/configs/rk3308_linux_aarch32_debug_defconfig
@@ -41,7 +41,7 @@ CONFIG_THUMB2_KERNEL=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 CONFIG_UACCESS_WITH_MEMCPY=y
 # CONFIG_SWIOTLB is not set
-CONFIG_CMDLINE="coherent_pool=0 user_debug=31"
+CONFIG_CMDLINE="coherent_pool=4k user_debug=31"
 CONFIG_CMDLINE_EXTEND=y
 CONFIG_CPU_FREQ=y
 # CONFIG_CPU_FREQ_TIMES is not set
diff --git a/arch/arm/configs/rk3308_linux_aarch32_defconfig b/arch/arm/configs/rk3308_linux_aarch32_defconfig
index 04378de8971c..b5b02a4ccfd5 100644
--- a/arch/arm/configs/rk3308_linux_aarch32_defconfig
+++ b/arch/arm/configs/rk3308_linux_aarch32_defconfig
@@ -41,7 +41,7 @@ CONFIG_THUMB2_KERNEL=y
 CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 CONFIG_UACCESS_WITH_MEMCPY=y
 # CONFIG_SWIOTLB is not set
-CONFIG_CMDLINE="coherent_pool=0 loglevel=0"
+CONFIG_CMDLINE="coherent_pool=4k loglevel=0"
 CONFIG_CMDLINE_EXTEND=y
 CONFIG_CPU_FREQ=y
 # CONFIG_CPU_FREQ_TIMES is not set