UART_CLK           91 arch/mips/jazz/setup.c #define UART_CLK  1843200
UART_CLK           95 arch/mips/jazz/setup.c #define UART_CLK (8000000 / 16) /* ( 3072000 / 16) */
UART_CLK          161 arch/sh/include/asm/smc37c93x.h #define UART_CLK	(1843200)	/* 1.8432 MHz */