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https://github.com/zephyrproject-rtos/zephyr
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d2291c4b12
Added option to have LFCLK synthesized from HFCLK. It is not low power but ensures constant relation between HFCLK and LFCLK and might be useful in certain scenarios (e.g. testing). Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
85 lines
2.0 KiB
Plaintext
85 lines
2.0 KiB
Plaintext
# Kconfig - Clock controller driver configuration options
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#
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# Copyright (c) 2016 Nordic Semiconductor ASA
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#
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# SPDX-License-Identifier: Apache-2.0
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config CLOCK_CONTROL_NRF_FORCE_ALT
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bool
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depends on SOC_COMPATIBLE_NRF
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help
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This option can be enabled to force an alternative implementation
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of the clock control driver.
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if !CLOCK_CONTROL_NRF_FORCE_ALT
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menuconfig CLOCK_CONTROL_NRF
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bool "NRF Clock controller support"
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depends on SOC_COMPATIBLE_NRF
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default y
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help
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Enable support for the Nordic Semiconductor nRFxx series SoC clock
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driver.
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if CLOCK_CONTROL_NRF
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choice CLOCK_CONTROL_NRF_SOURCE
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prompt "32KHz clock source"
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default CLOCK_CONTROL_NRF_K32SRC_XTAL
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config CLOCK_CONTROL_NRF_K32SRC_RC
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bool "RC Oscillator"
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config CLOCK_CONTROL_NRF_K32SRC_XTAL
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bool "Crystal Oscillator"
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config CLOCK_CONTROL_NRF_K32SRC_SYNTH
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depends on !SOC_SERIES_NRF91X
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bool "Synthesized from HFCLK"
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endchoice
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config CLOCK_CONTROL_NRF_K32SRC_BLOCKING
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bool "Blocking 32KHz crystal oscillator startup"
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depends on CLOCK_CONTROL_NRF_K32SRC_XTAL
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help
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Clock control driver will spin wait in CPU sleep until 32KHz
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crystal oscillator starts up. If not enabled, RC oscillator will
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initially start running and automatically switch to crystal when
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ready.
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choice CLOCK_CONTROL_NRF_ACCURACY
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prompt "32KHz clock accuracy"
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default CLOCK_CONTROL_NRF_K32SRC_500PPM if CLOCK_CONTROL_NRF_K32SRC_RC
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default CLOCK_CONTROL_NRF_K32SRC_20PPM
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config CLOCK_CONTROL_NRF_K32SRC_500PPM
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bool "251 ppm to 500 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_250PPM
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bool "151 ppm to 250 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_150PPM
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bool "101 ppm to 150 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_100PPM
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bool "76 ppm to 100 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_75PPM
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bool "51 ppm to 75 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_50PPM
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bool "31 ppm to 50 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_30PPM
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bool "21 ppm to 30 ppm"
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config CLOCK_CONTROL_NRF_K32SRC_20PPM
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bool "0 ppm to 20 ppm"
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endchoice
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endif # CLOCK_CONTROL_NRF
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endif #!CLOCK_CONTROL_NRF_FORCE_ALT
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