Marco Casaroli d3e856c56e arch/arm/rp23xx: Add RTC alarm support on the POWMAN always-on timer. ... The always-on timer has an alarm comparator, but the RTC driver did not use it: rp23xx_rtc.c implemented only up_rtc_initialize(), up_rtc_time() and up_rtc_settime(). Add the alarm and an RTC lower half for /dev/rtc0: - rp23xx_rtc_setalarm(), rp23xx_rtc_cancelalarm() and rp23xx_rtc_rdalarm() on the ALARM_TIME registers and the POWMAN timer interrupt. - An RTC lower half with rdtime, settime, setalarm, setrelative, cancelalarm and rdalarm, registered by the common board bringup. The comparator asserts while the time is past the alarm time, not on a transition. So the interrupt handler disables the alarm before it does anything else; clearing only the status makes the interrupt repeat. The arming sequence is the one of powman_timer_enable_alarm_at_ms() in the Pico SDK. Assisted-by: Claude Code:claude-opus-5-5 Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>		2026-10-07 16:22:56 -03:00
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include	arch/arm/imxrt: ROM api support	2026-10-07 08:20:12 -03:00
src	arch/arm/rp23xx: Add RTC alarm support on the POWMAN always-on timer.	2026-10-07 16:22:56 -03:00
CMakeLists.txt
Kconfig	arch/arm/ra8m1: Add DTC and per-instance SCI FIFO/DTC/termios support	2026-10-06 16:56:58 -03:00