Re: i8253 != rtc

[Jonathan Lundell]

At 4:23pm +0200 6/16/03, Pavel Machek wrote:
>  /* XXX this driverfs stuff should probably go elsewhere later -john
>*/
>  static struct sys_device device_i8253 = {
>-       .name           = "rtc",
>         .id             = 0,
>-       .dev    = {
>-               .name   = "i8253 Real Time Clock",
>-       },
>+       .cls    = &rtc_sysclass,
>  };
>
>...but i8253 is *not* real time clock. Its clock since
>bootup. Realtime clock is near battery-backed CMOS RAM, its driver is
>linux/drivers/char/rtc.c...

FWIW, the legacy Intel databooks call it a "Programmable Interval 
Timer" (PIT). Likewise the 8254, a superset of the 8253. I don't know 
that Intel ever used the 'i' prefix on these parts.
-- 
/Jonathan Lundell.