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