The MFD_OMAP_USB_HOST uses Common Clock Framework thus it cannot be built on platforms without it (e.g. compile test on MIPS with LANTIQ): mips-linux-ld: drivers/mmc/host/mtk-sd.o: in function `msdc_ops_set_ios': mtk-sd.c:(.text+0x2bbc): undefined reference to `clk_get_parent' Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- drivers/mmc/host/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 310e546e5898..bfe912ec8955 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -1023,6 +1023,7 @@ config MMC_BCM2835 config MMC_MTK tristate "MediaTek SD/MMC Card Interface support" depends on HAS_DMA + depends on COMMON_CLK select REGULATOR select MMC_CQHCI help -- 2.25.1