Added RTC driver that supports Motorola MC146818B
Enabled RTC set/get time and alarm, alarm callback
and update callback.
Counter and RTC uses same hardware in case of
Motorola MC146818, so they can't be used at a time.
Updated stand-alone mc146818 counter dts instances
to support rtc and counter with same compatible
string of "motorola,mc146818" on ia32, atom,
apollo_lake, elhart_lake and raptor_lake platforms.
Signed-off-by: Anisetti Avinash Krishna <anisetti.avinash.krishna@intel.com>
Platforms that enable UART_NS16550_ACCESS_IOPORT (the case for ia32)
require reg-shift to be zero. Fix this issue introduced in
4c8a8149de.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
The ns16550 flags reg-shift property as optional. In case it is not
supplied, the ns16550 driver relies on a value defined in <soc.h>, or,
by default it takes 4 (shift by 2).
This patch adds the property to all ns16550 nodes, with the following
values:
- 2 if SoC did not have any custom value defined by
UART_REG_ADDR_INTERVAL (corresponds to 1 << 2 = 4)
- If SoC defined DEFAULT_REG_INTERVAL (snps_arc_iot/it8xxx2), use such
value (4=2, 2=1, 1=0).
These changes will allow simplifying the ns16550 driver.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
