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[nrf fromlist] soc: nordic: ironside: dvfs: check abb analog status m… #3078

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Merged
merged 2 commits into from
Aug 11, 2025
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[nrf fromlist] soc: nordic: ironside: dvfs: check abb analog status m… #3078

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a5b72f3
[nrf noup] soc: nordic: ironside: fix typo in Kconfig
lstnl Aug 6, 2025
682331a
[nrf fromlist] soc: nordic: ironside: dvfs: check abb analog status m…
lstnl Jul 23, 2025
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9 changes: 5 additions & 4 deletions soc/nordic/ironside/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -65,11 +65,12 @@ config NRF_IRONSIDE_DVFS_SERVICE

if NRF_IRONSIDE_DVFS_SERVICE

config NRF_IRONSIDE_DVFS_OPPOINT_CHANGE_MUTEX_TIMEOUT_MS
int "IRONSside DVFS change oppoint mutex timeout"
default 100
config NRF_IRONSIDE_ABB_STATUSANA_CHECK_MAX_ATTEMPTS
int "IRONSside DVFS ABB analog status check maximum attempts"
range 0 255
default 50
help
Maximum tiemout when waiting for DVFS oppoint change mutex lock.
Maximum attempts with 10us intervals before busy status will be reported.

endif # NRF_IRONSIDE_DVFS_SERVICE

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10 changes: 10 additions & 0 deletions soc/nordic/ironside/dvfs.c
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Expand Up @@ -18,6 +18,9 @@ static enum ironside_dvfs_oppoint current_dvfs_oppoint = IRONSIDE_DVFS_OPP_HIGH;
#error "Unsupported SoC series for IronSide DVFS"
#endif

#define ABB_STATUSANA_CHECK_MAX_ATTEMPTS (CONFIG_NRF_IRONSIDE_ABB_STATUSANA_CHECK_MAX_ATTEMPTS)
#define ABB_STATUSANA_CHECK_INTERVAL_US (10U)

struct dvfs_hsfll_data_t {
uint32_t new_f_mult;
uint32_t new_f_trim_entry;
Expand Down Expand Up @@ -129,6 +132,13 @@ static inline bool ironside_dvfs_is_abb_locked(NRF_ABB_Type *abb)
/* Temporary workaround until STATUSANA register is visible. */
volatile const uint32_t *statusana = (uint32_t *)abb + ABB_STATUSANA_REG_OFFSET;

uint8_t status_read_attempts = ABB_STATUSANA_CHECK_MAX_ATTEMPTS;

while ((*statusana & ABB_STATUSANA_LOCKED_L_Msk) == 0 && status_read_attempts > 0) {
k_busy_wait(ABB_STATUSANA_CHECK_INTERVAL_US);
status_read_attempts--;
}

return ((*statusana & ABB_STATUSANA_LOCKED_L_Msk) != 0);
}

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