TIOCTIMESTAMP rc=0 sec=0 usec=0 (expect 0/0 or runtime vals, not 0xAA garbage)
TIOCDCDTIMESTAMP rc=0 sec=0 usec=0
TIOCMGET rc=0 bits=0x167 (LE|DTR|RTS expected)
ttyd0 TIOCGETA before: ispeed=115200 ospeed=115200 cflag=0xcb00
TIOCSETA(57600) rc=0
ttyd0 TIOCGETA after (speed must be unchanged: lock holds): ispeed=115200 ospeed=115200 cflag=0xcb00
OK: console speed lock enforced by sio.c merge (2077-2099)
ttyid0 TIOCGETA (it_in): ispeed=115200 ospeed=115200 cflag=0xcb00
ttyid0 TIOCGWINSZ rc=0 row=0 col=0 (expect zeros)
ttyid0 TIOCSETA rc=0 (root: expect 0; unpriv: expect EPERM)
ttyid0 after SETA: ispeed=57600 ospeed=57600 cflag=0xcb00
ttyid0 restore rc=0
TIOCMGDTRWAIT rc=0 dtr_wait=300 cs
TIOCMSDTRWAIT(300) rc=0
  readback=300
DONE