> Referencing XO in commit msg is confusing. Anyway, answer to such error > is not necessarily change the clock rate. What if it must be 20 MHz? You > just ignore such requirement.. The downstream QSDK kernel [1] and GCC_USB1_MOCK_UTMI_CLK are both 24MHz. Judging from these commit [1][2], I think they forgot to make changes here. 1. https://git.codelinaro.org/clo/qsdk/oss/kernel/linux-ipq-5.4/-/commit/486c8485f59 2. https://github.com/torvalds/linux/commit/d1c10ab1494f09eb12fa6e58fc78bb28d44922ae Thanks, Chukun -- 2.25.1