A method for automatic clock configurations is performed by a system having a host and a peripheral device. The host indicates on a first general-purpose input/output (GPIO) of a peripheral interface connecting the host and the peripheral device, whether the host supports a first clock configuration. The peripheral device receives from the first GPIO whether the host supports the first clock configuration. The peripheral device selects, in response to the host supporting the first clock configuration, use of a local clock of the peripheral device. The peripheral device selects, in response to the host not supporting the first clock configuration, use of a common clock of the host.