diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig
index b794cda..e477a6c 100644
--- a/drivers/phy/rockchip/Kconfig
+++ b/drivers/phy/rockchip/Kconfig
@@ -23,6 +23,9 @@
 	depends on PHY && ARCH_ROCKCHIP
 	help
 	  Support for Rockchip PCIe3 PHY with Synopsys IP block.
+	  It could support PCIe Gen3 single root complex, and could
+	  also be able splited into multiple combinations of lanes.
+
 
 config PHY_ROCKCHIP_TYPEC
 	bool "Rockchip TYPEC PHY Driver"