Function uart_platform_refclk

src/drivers/uart/util.c:32–44

#if !CONFIG(UART_OVERRIDE_REFCLK)
unsigned int uart_platform_refclk(void)
{
	/* Specify the default input clock frequency for the UART.
	 *
	 * The older UART's used an input clock frequency of 1.8432 MHz which
	 * with the 16x oversampling provided the maximum baud-rate of 115200.
	 * Specify this as maximum baud-rate multiplied by oversample so that
	 * it is obvious that the maximum baud rate is 115200 when divided by
	 * oversample clock.  Also note that crystal on the board does not
	 * change when software selects another input clock divider.
	 */
	return 115200 * 16;
}
#endif

/* Helper function to allow bitbanging an 8n1 UART. */