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drivers: timer: nrf_grtc_timer: Align Zephyr to new AUTOEN read manner

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The new GRTC reading manner of the SYSCOUNTER uses hardware mechanism which
allows to keep it alive when any of CPUs is not sleeping. Otherwise
the SYSCOUNTER goes into sleep mode. Thus there is no
longer need to maintain the `CONFIG_NRF_GRTC_SLEEP_ALLOWED` symbol, however
if the user wants to have the SYSCOUNTER enabled all the time the
`CONFIG_NRF_GRTC_ALWAYS_ON` can be used instead.
The nrfx_grtc  driver no longer provides the `wakeup-read-sleep` reading
manner.
Also setting the GRTC clock source is performed by the nrfx_grtc driver so
it has been removed from the `sys_clock_driver_init()` function.

Signed-off-by: Adam Kondraciuk <adam.kondraciuk@nordicsemi.no>
This commit is contained in:
Adam Kondraciuk 2024-09-26 12:40:07 +02:00 • committed by Carles Cufí
commit bc7a5b6781
9 changed files with 10 additions and 62 deletions
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2
soc/nordic/nrf54l/Kconfig
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@ -86,7 +86,7 @@ if NRF_GRTC_TIMER
config ELV_GRTC_LFXO_ALLOWED
bool
depends on NRF_GRTC_SLEEP_ALLOWED
depends on POWEROFF
select EXPERIMENTAL
help
This feature allows using ELV mode when GRTC operates with the LFXO as