u-boot-brain/drivers/phy/Kconfig

menu "PHY Subsystem"

config PHY
	bool "PHY Core"
	depends on DM
	help
	  PHY support.

	  This framework is designed to provide a generic interface for PHY
	  devices. PHY devices are dedicated hardware that handle the physical
	  layer of the protocols in the OSI model.
	  PHYs are commonly used for high speed interfaces such as Serial-ATA
	  or PCI express.
	  The API provides functions to initialize/deinitialize the
	  PHY, power on/off the PHY, and reset the PHY. It's meant to be as
	  compatible as possible with the equivalent framework found in the
	  linux kernel.

config SPL_PHY
	bool "PHY Core in SPL"
	depends on DM
	help
	  PHY support in SPL.

	  This framework is designed to provide a generic interface for PHY
	  devices. PHY devices are dedicated hardware that handle the physical
	  layer of the protocols (https://en.wikipedia.org/wiki/OSI_model).
	  PHYs are commonly used for high speed interfaces such as Serial-ATA
	  or PCI express.
	  The API provides functions to initialize/deinitialize the
	  PHY, power on/off the PHY, and reset the PHY. It's meant to be as
	  compatible as possible with the equivalent framework found in the
	  linux kernel.

config PHY_SANDBOX
	bool "Sandbox PHY support"
	depends on SANDBOX
	depends on PHY
	help
	  This select a dummy sandbox PHY driver. It used only to implement
	  the unit tests for the phy framework

endmenu