1# Clock controller driver configuration options 2 3# Copyright (c) 2016 Nordic Semiconductor ASA 4# SPDX-License-Identifier: Apache-2.0 5 6config CLOCK_CONTROL_NRF_FORCE_ALT 7 bool 8 depends on SOC_COMPATIBLE_NRF 9 help 10 This option can be enabled to force an alternative implementation 11 of the clock control driver. 12 13menuconfig CLOCK_CONTROL_NRF 14 bool "NRF Clock controller support" 15 default y 16 depends on DT_HAS_NORDIC_NRF_CLOCK_ENABLED 17 select NRFX_CLOCK if !CLOCK_CONTROL_NRF_FORCE_ALT 18 select ONOFF 19 help 20 Enable support for the Nordic Semiconductor nRFxx series SoC clock 21 driver. 22 23if CLOCK_CONTROL_NRF 24 25config CLOCK_CONTROL_NRF_SHELL 26 bool "Shell commands" 27 depends on SHELL 28 default y if SHELL 29 30choice CLOCK_CONTROL_NRF_SOURCE 31 prompt "32KHz clock source" 32 default CLOCK_CONTROL_NRF_K32SRC_XTAL 33 34config CLOCK_CONTROL_NRF_K32SRC_RC 35 bool "RC Oscillator" 36 37config CLOCK_CONTROL_NRF_K32SRC_XTAL 38 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if (!SOC_SERIES_BSIM_NRFXX && \ 39 !CLOCK_CONTROL_NRF_FORCE_ALT) 40 bool "Crystal Oscillator" 41 42config CLOCK_CONTROL_NRF_K32SRC_SYNTH 43 depends on !SOC_SERIES_NRF91X 44 bool "Synthesized from HFCLK" 45 46config CLOCK_CONTROL_NRF_K32SRC_EXT_LOW_SWING 47 depends on SOC_SERIES_NRF52X 48 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if !CLOCK_CONTROL_NRF_FORCE_ALT 49 bool "External low swing" 50 51config CLOCK_CONTROL_NRF_K32SRC_EXT_FULL_SWING 52 depends on SOC_SERIES_NRF52X 53 select NRFX_CLOCK_LFXO_TWO_STAGE_ENABLED if !CLOCK_CONTROL_NRF_FORCE_ALT 54 bool "External full swing" 55 56endchoice 57 58config CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 59 bool "LF clock calibration" 60 depends on !SOC_SERIES_NRF91X && CLOCK_CONTROL_NRF_K32SRC_RC 61 default y if !BOARD_ENABLE_CPUNET 62 help 63 If calibration is disabled when RC is used for low frequency clock then 64 accuracy of the low frequency clock will degrade. Disable on your own 65 risk. 66 67if CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 68 69config CLOCK_CONTROL_NRF_DRIVER_CALIBRATION 70 bool 71 depends on !CLOCK_CONTROL_NRF_FORCE_ALT 72 depends on MULTITHREADING 73 default y 74 help 75 Enabling indicates that calibration is performed by the clock control driver. 76 77config CLOCK_CONTROL_NRF_CALIBRATION_LF_ALWAYS_ON 78 bool "LF clock is always on" 79 default y if NRF_RTC_TIMER 80 help 81 If RTC is used as system timer then LF clock is always on and handling 82 can be simplified. 83 84config CLOCK_CONTROL_NRF_CALIBRATION_PERIOD 85 int "Calibration opportunity period in milliseconds" 86 default 4000 87 help 88 Periodically, calibration action is performed. Action includes 89 temperature measurement followed by clock calibration. Calibration may 90 be skipped if temperature change (compared to measurement of previous 91 calibration) did not exceeded CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF 92 and number of consecutive skips did not exceeded 93 CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP. 94 95config CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP 96 int "Maximum number of calibration skips" 97 default 1 98 range 0 255 99 help 100 Calibration is skipped when temperature change since last calibration 101 was less than configured threshold. If number of consecutive skips 102 reaches configured value then calibration is performed 103 unconditionally. Set to 0 to perform calibration periodically 104 regardless of temperature change. 105 106config CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF 107 int "Temperature change triggering calibration (in 0.25 degree units)" 108 default 2 109 help 110 Calibration is triggered if the temperature has changed by at least 111 this amount since the last calibration. 112 113if CLOCK_CONTROL_NRF_DRIVER_CALIBRATION 114 115config CLOCK_CONTROL_NRF_CALIBRATION_DEBUG 116 bool "Calibration instrumentation" 117 help 118 Enables retrieving debug information like number of performed or 119 skipped calibrations. 120 121config CLOCK_CONTROL_NRF_USES_TEMP_SENSOR 122 bool 123 depends on HAS_HW_NRF_TEMP 124 default y if CLOCK_CONTROL_NRF_CALIBRATION_MAX_SKIP > 0 && \ 125 CLOCK_CONTROL_NRF_CALIBRATION_TEMP_DIFF > 0 126 select TEMP_NRF5 127 select SENSOR 128 129endif # CLOCK_CONTROL_NRF_DRIVER_CALIBRATION 130endif # CLOCK_CONTROL_NRF_K32SRC_RC_CALIBRATION 131 132choice CLOCK_CONTROL_NRF_ACCURACY_PPM 133 prompt "32KHz clock accuracy" 134 default CLOCK_CONTROL_NRF_K32SRC_500PPM if CLOCK_CONTROL_NRF_K32SRC_RC 135 default CLOCK_CONTROL_NRF_K32SRC_50PPM 136 137config CLOCK_CONTROL_NRF_K32SRC_500PPM 138 bool "251 ppm to 500 ppm" 139 140config CLOCK_CONTROL_NRF_K32SRC_250PPM 141 bool "151 ppm to 250 ppm" 142 143config CLOCK_CONTROL_NRF_K32SRC_150PPM 144 bool "101 ppm to 150 ppm" 145 146config CLOCK_CONTROL_NRF_K32SRC_100PPM 147 bool "76 ppm to 100 ppm" 148 149config CLOCK_CONTROL_NRF_K32SRC_75PPM 150 bool "51 ppm to 75 ppm" 151 152config CLOCK_CONTROL_NRF_K32SRC_50PPM 153 bool "31 ppm to 50 ppm" 154 155config CLOCK_CONTROL_NRF_K32SRC_30PPM 156 bool "21 ppm to 30 ppm" 157 158config CLOCK_CONTROL_NRF_K32SRC_20PPM 159 bool "0 ppm to 20 ppm" 160 161endchoice 162 163config CLOCK_CONTROL_NRF_ACCURACY 164 int 165 default 500 if CLOCK_CONTROL_NRF_K32SRC_500PPM 166 default 250 if CLOCK_CONTROL_NRF_K32SRC_250PPM 167 default 150 if CLOCK_CONTROL_NRF_K32SRC_150PPM 168 default 100 if CLOCK_CONTROL_NRF_K32SRC_100PPM 169 default 75 if CLOCK_CONTROL_NRF_K32SRC_75PPM 170 default 50 if CLOCK_CONTROL_NRF_K32SRC_50PPM 171 default 30 if CLOCK_CONTROL_NRF_K32SRC_30PPM 172 default 20 if CLOCK_CONTROL_NRF_K32SRC_20PPM 173 174endif # CLOCK_CONTROL_NRF 175
