M_USBO 1640 drivers/clk/clk-stm32mp1.c K_MUX(M_USBO, RCC_USBCKSELR, 4, 1, 0), M_USBO 1951 drivers/clk/clk-stm32mp1.c KCLK(USBO_K, "usbo_k", usbo_src, 0, G_USBO, M_USBO),