Mainline:Broadcom Kona/BCM590xx/RTC: Difference between revisions
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This exact format is used for both the time and alarm registers. | This exact format is used for both the time and alarm registers. The masks are enforced by hardware - any bit written outside of the mask gets ignored. | ||
== Getting the time == | == Getting the time == | ||
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There are interrupts for updates of each of the time values. | There are interrupts for updates of each of the time values. | ||
The default reset value is <code>0 0 0 0 0 1 7</code> (2007-01-00 00:00:00, weekday 0). Notably, the day of month is invalid (0) | The default reset value is <code>0 0 0 0 0 1 7</code> (2007-01-00 00:00:00, weekday 0). Notably, the day of month is invalid (0). | ||
If the date overflows (1 second after 2255-12-31 23:59:59), the clock returns to 2255-12-01 00:00:00. | If the date overflows (1 second after 2255-12-31 23:59:59), the clock returns to 2255-12-01 00:00:00. | ||
=== Adjustment IRQ === | |||
There is an RTCADJ IRQ that is supposed to fire when the RTC value is invalid (at least according to the comments of the downstream driver, and the downstream BCM59055 RTC driver). However, I haven't been able to get it to fire in my testing. | |||
== Alarm == | == Alarm == | ||