> That does not look like XO, but GCC_USB0_MOCK_UTMI_CLK I don't have the datasheet, but the reference clock (XO) is 24MHz, and I receive the following warning: clk: couldn't set gcc_usb0_mock_utmi_clk clk rate to 20000000 (-22), current rate: 24000000 Thanks, Chukun -- 2.25.1