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[Backport v3.7.99-ncs1-branch] [nrf fromlist] drivers: timer: grtc: Add LFPRC as the source of GRTC #2233

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Nov 6, 2024
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[Backport v3.7.99-ncs1-branch] [nrf fromlist] drivers: timer: grtc: Add LFPRC as the source of GRTC #2233

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14 changes: 11 additions & 3 deletions drivers/timer/nrf_grtc_timer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -426,8 +426,12 @@ int z_nrf_grtc_wakeup_prepare(uint64_t wake_time_us)
nrfy_grtc_timeout_get(NRF_GRTC) * CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC / 32768 +
MAX_CC_LATCH_WAIT_TIME_US;
k_busy_wait(wait_time);
#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lfxo)) && NRF_GRTC_HAS_CLKSEL
#if NRF_GRTC_HAS_CLKSEL
#if defined(CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC)
nrfx_grtc_clock_source_set(NRF_GRTC_CLKSEL_LFLPRC);
#elif DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lfxo))
nrfx_grtc_clock_source_set(NRF_GRTC_CLKSEL_LFXO);
#endif
#endif
k_spin_unlock(&lock, key);
return 0;
Expand Down Expand Up @@ -501,11 +505,15 @@ static int sys_clock_driver_init(void)
z_nrf_clock_control_lf_on(mode);
#endif

#if defined(CONFIG_NRF_GRTC_TIMER_CLOCK_MANAGEMENT) && \
DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lfxo)) && NRF_GRTC_HAS_CLKSEL
#if defined(CONFIG_NRF_GRTC_TIMER_CLOCK_MANAGEMENT) && NRF_GRTC_HAS_CLKSEL
#if defined(CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC)
/* Switch to LFPRC as the low-frequency clock source. */
nrfx_grtc_clock_source_set(NRF_GRTC_CLKSEL_LFLPRC);
#elif DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lfxo))
/* Switch to LFXO as the low-frequency clock source. */
nrfx_grtc_clock_source_set(NRF_GRTC_CLKSEL_LFXO);
#endif
#endif

#if defined(CONFIG_NRF_GRTC_ALWAYS_ON)
nrfx_grtc_active_request_set(true);
Expand Down
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