tx4939_sio_init   504 arch/mips/include/asm/txx9/tx4939.h void tx4939_sio_init(unsigned int sclk, unsigned int cts_mask);
tx4939_sio_init   540 arch/mips/txx9/rbtx4939/setup.c 	tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);