soc: nordic: Use proper devicetree entries for clock frequency

nordicjm · kartben · commit 270f5d6771d3 · 2025-05-23T14:04:32.000+02:00
Sets the SYS_CLOCK_HW_CYCLES_PER_SEC Kconfig from devicetree
entries. Also fixes invalid configuration on nrf54h20 whereby it
attempts to take the clock frequency from a peripheral that does
not exist

Signed-off-by: Jamie McCrae &lt;jamie.mccrae@nordicsemi.no&gt;
diff --git a/soc/nordic/Kconfig.defconfig b/soc/nordic/Kconfig.defconfig
@@ -13,10 +13,6 @@ rsource "*/Kconfig.defconfig"
 config CLOCK_CONTROL
 	default y if SYS_CLOCK_EXISTS && !NRF_PLATFORM_HALTIUM && !RISCV_CORE_NORDIC_VPR
 
-config SYS_CLOCK_HW_CYCLES_PER_SEC
-	default 1000000 if NRF_GRTC_TIMER
-	default 32768
-
 config SYS_CLOCK_TICKS_PER_SEC
 	default 128 if !TICKLESS_KERNEL
 	default 31250  if NRF_GRTC_TIMER
diff --git a/soc/nordic/nrf51/Kconfig.defconfig b/soc/nordic/nrf51/Kconfig.defconfig
@@ -13,4 +13,7 @@ config NUM_IRQS
 config NRF_RTC_TIMER
 	default y if SYS_CLOCK_EXISTS
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,rtc1,clock-frequency)
+
 endif # SOC_SERIES_NRF51X
diff --git a/soc/nordic/nrf52/Kconfig.defconfig b/soc/nordic/nrf52/Kconfig.defconfig
@@ -11,4 +11,7 @@ rsource "Kconfig.defconfig.nrf52*"
 config NRF_RTC_TIMER
 	default y if SYS_CLOCK_EXISTS
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,rtc1,clock-frequency)
+
 endif # SOC_SERIES_NRF52X
diff --git a/soc/nordic/nrf53/Kconfig.defconfig b/soc/nordic/nrf53/Kconfig.defconfig
@@ -11,4 +11,7 @@ rsource "Kconfig.defconfig.nrf53*"
 config NRF_RTC_TIMER
 	default y if SYS_CLOCK_EXISTS
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,rtc1,clock-frequency)
+
 endif # SOC_SERIES_NRF53X
diff --git a/soc/nordic/nrf54h/Kconfig.defconfig b/soc/nordic/nrf54h/Kconfig.defconfig
@@ -27,10 +27,6 @@ config BUILD_OUTPUT_ADJUST_LMA
 config BUILD_OUTPUT_HEX
 	default y
 
-config SYS_CLOCK_HW_CYCLES_PER_SEC
-	default 1000000 if NRF_GRTC_TIMER
-	default 32768 if NRF_RTC_TIMER
-
 endif # RISCV
 
 config SPI_DW_HSSI
@@ -45,4 +41,7 @@ config PM_DEVICE_POWER_DOMAIN
 config PM_DEVICE_RUNTIME
 	default y if PM_DEVICE
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,grtc,clock-frequency) if NRF_GRTC_TIMER
+
 endif # SOC_SERIES_NRF54HX
diff --git a/soc/nordic/nrf54l/Kconfig.defconfig b/soc/nordic/nrf54l/Kconfig.defconfig
@@ -46,4 +46,7 @@ config BUILD_OUTPUT_ADJUST_LMA
 
 endif # RISCV
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,grtc,clock-frequency) if NRF_GRTC_TIMER
+
 endif # SOC_SERIES_NRF54LX
diff --git a/soc/nordic/nrf91/Kconfig.defconfig b/soc/nordic/nrf91/Kconfig.defconfig
@@ -11,4 +11,7 @@ rsource "Kconfig.defconfig.nrf91*"
 config NRF_RTC_TIMER
 	default y if SYS_CLOCK_EXISTS
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,rtc1,clock-frequency)
+
 endif # SOC_SERIES_NRF91X
diff --git a/soc/nordic/nrf92/Kconfig.defconfig b/soc/nordic/nrf92/Kconfig.defconfig
@@ -38,4 +38,7 @@ config SPI_DW_HSSI
 config SPI_DW_ACCESS_WORD_ONLY
 	default y if SPI_DW
 
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_nodelabel_int_prop,grtc,clock-frequency) if NRF_GRTC_TIMER
+
 endif # SOC_SERIES_NRF92X
