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-rw-r--r--target/aarch64/kernel/rockpi4-plus3
1 files changed, 3 insertions, 0 deletions
diff --git a/target/aarch64/kernel/rockpi4-plus b/target/aarch64/kernel/rockpi4-plus
index c5c1446d8..237d7ba54 100644
--- a/target/aarch64/kernel/rockpi4-plus
+++ b/target/aarch64/kernel/rockpi4-plus
@@ -1173,3 +1173,6 @@ CONFIG_DAX=y
CONFIG_NVMEM=y
CONFIG_NVMEM_SYSFS=y
CONFIG_ROCKCHIP_EFUSE=y
+
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y