39 lines
1.4 KiB
Plaintext
39 lines
1.4 KiB
Plaintext
# Common RTC configuration
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# Copyright (c) 2023 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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if NRF_RTC_TIMER || NRF_GRTC_TIMER
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choice
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prompt "Clock startup policy"
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default SYSTEM_CLOCK_WAIT_FOR_STABILITY
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config SYSTEM_CLOCK_NO_WAIT
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bool "No wait"
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help
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System clock source is initiated but does not wait for clock readiness.
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When this option is picked, system clock may not be ready when code relying
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on kernel API is executed. Requested timeouts will be prolonged by the
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remaining startup time.
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config SYSTEM_CLOCK_WAIT_FOR_AVAILABILITY
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bool "Wait for availability"
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help
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System clock source initialization waits until clock is available. In some
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systems, clock initially runs from less accurate source which has faster
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startup time and then seamlessly switches to the target clock source when
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it is ready. When this option is picked, system clock is available after
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system clock driver initialization but it may be less accurate. Option is
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equivalent to waiting for stability if clock source does not have
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intermediate state.
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config SYSTEM_CLOCK_WAIT_FOR_STABILITY
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bool "Wait for stability"
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help
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System clock source initialization waits until clock is stable. When this
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option is picked, system clock is available and stable after system clock
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driver initialization.
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endchoice
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endif # NRF_RTC_TIMER || NRF_GRTC_TIMER
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