The Tegra USB PHY driver uses Common Clock Framework thus it cannot be built on platforms without it (e.g. compile test on MIPS with RALINK and SOC_RT305X): /usr/bin/mips-linux-gnu-ld: drivers/usb/phy/phy-tegra-usb.o: in function `tegra_usb_phy_init': phy-tegra-usb.c:(.text+0x1dd4): undefined reference to `clk_get_parent' Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- drivers/usb/phy/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index ef4787cd3d37..0015697470ef 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -162,7 +162,7 @@ config USB_MXS_PHY config USB_TEGRA_PHY tristate "NVIDIA Tegra USB PHY Driver" - depends on ARCH_TEGRA || COMPILE_TEST + depends on ARCH_TEGRA || COMPILE_TEST && COMMON_CLK select USB_COMMON select USB_PHY select USB_ULPI -- 2.25.1