Lines Matching +full:one +full:- +full:timer +full:- +full:only

30 .Nd i8254 Programmable Interval Timer (AT Timer) driver
36 .Bl -ohang
38 controls support for the event timer functionality.
53 The same value is also available at run-time via the
58 This driver uses i8254 Programmable Interval Timer (AT Timer) hardware
59 to supply the kernel with one timecounter and one event timer, and to generate
63 platform-dependent frequency.
65 one-shot.
66 The output of each channel has platform-defined wiring: one channel is wired
67 to the interrupt controller and may be used as event timer, one channel is
68 wired to the speaker and used to generate sound tones, and one timer is reserved
74 timer functionality.
76 As a result, the one-shot event timer mode is supported only when time counter
79 The event timer provided by the driver is irrelevant to CPU power states.