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.Dd June 8, 2026 .Dt BQ4802RTC 4 .Os .Sh NAME .Nm bq4802rtc .Nd Texas Instruments bq4802Y/bq4802LY Real-Time Clock .Sh SYNOPSIS .Cd "bq4802rtc* at ebus? # sparc64" .Sh DESCRIPTION The .Nm driver provides access to the Texas Instruments bq4802Y/bq4802LY real-time clock. Access methods to retrieve and set date and time are provided through the .Em TODR interface defined in .Xr todr 9 .
p The chip supports stopping the oscillator to conserve battery life if the computer will be stored for an extended period. The .Nm driver makes the oscillator control available via .Xr sysctl 8 . For example: d -literal -offset indent hw.bq4802rtc0.stop_oscillator = 0 .Ed
p A value of .Dq 0 means that the oscillator is running when the computer is powered off, and a value of .Dq 1 means that the oscillator is stopped. If the oscillator is stopped, then the driver will output a warning message at attach time, but does not automatically restart the oscillator. .Sh SEE ALSO .Xr sysctl 8, .Xr todr 9 .Sh HISTORY The .Nm driver first appeared in .Nx 11.1 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Julian Coleman Aq Mt jcoleman (at] NetBSD.org .
Indexes created Mon Oct 26 00:26:21 UTC 2026