soc: microchip: mec: Unify kernel timer tick rate configuration

Microchip MEC was configuring the kernel timer tick rate at the
board level instead of the SoC level. We unify all this by moving
the Kconfig logic out of the board level into each mec chip.
We also derive SYS_CLOCK_HW_TICKS_PER_SEC from the device tree
node enabled for the kernel timer: Microchip's 32 KHz RTOT timer
or Cortex-M4 SYSTICK. The soc kconfig rules are loading all mec
subdirectories for every build causing warnings when building
new socs with this change. We made the changes for all the mec chips.

Signed-off-by: Scott Worley <scott.worley@microchip.com>

Author: scottwcpg

soc/microchip/mec/mec15xx/Kconfig

@@ -16,9 +16,6 @@ config SOC_MEC1501_HSZ
 
 if SOC_SERIES_MEC15XX
 
-config RTOS_TIMER
-	bool "MEC1501 RTOS timer"
-
 config SOC_MEC1501_PROC_CLK_DIV
 	int "PROC_CLK_DIV"
 	default 1

soc/microchip/mec/mec15xx/Kconfig.defconfig.series

@@ -13,17 +13,23 @@ config NUM_IRQS
 
 rsource "Kconfig.defconfig.mec1501*"
 
-if RTOS_TIMER
+config CORTEX_M_SYSTICK
+	depends on !MCHP_XEC_RTOS_TIMER
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency) if CORTEX_M_SYSTICK
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency) if MCHP_XEC_RTOS_TIMER
+
+if MCHP_XEC_RTOS_TIMER
+config SYS_CLOCK_TICKS_PER_SEC
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency)
 
 config SOC_HAS_TIMING_FUNCTIONS
 	default y if !CORTEX_M_DWT
 
 config ARCH_HAS_CUSTOM_BUSY_WAIT
 	default y
 
-endif # RTOS_TIMER
-
-config CORTEX_M_SYSTICK
-	depends on !RTOS_TIMER
+endif # MCHP_XEC_RTOS_TIMER
 
 endif # SOC_SERIES_MEC15XX

soc/microchip/mec/mec172x/Kconfig

@@ -15,9 +15,6 @@ config SOC_SERIES_MEC172X
 
 if SOC_SERIES_MEC172X
 
-config RTOS_TIMER
-	bool "MEC172x RTOS Timer(32KHz) as kernel timer"
-
 choice
 	prompt "MEC172x debug interface general configuration"
 	default SOC_MEC172X_DEBUG_WITHOUT_TRACING

soc/microchip/mec/mec172x/Kconfig.defconfig.series

@@ -13,18 +13,24 @@ config NUM_IRQS
 
 rsource "Kconfig.defconfig.mec172x*"
 
-if RTOS_TIMER
+config CORTEX_M_SYSTICK
+	depends on !MCHP_XEC_RTOS_TIMER
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency) if CORTEX_M_SYSTICK
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency) if MCHP_XEC_RTOS_TIMER
+
+if MCHP_XEC_RTOS_TIMER
+config SYS_CLOCK_TICKS_PER_SEC
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency)
 
 config SOC_HAS_TIMING_FUNCTIONS
 	default y if !CORTEX_M_DWT
 
 config ARCH_HAS_CUSTOM_BUSY_WAIT
 	default y
 
-endif # RTOS_TIMER
-
-config CORTEX_M_SYSTICK
-	depends on !RTOS_TIMER
+endif # MCHP_XEC_RTOS_TIMER
 
 config PS2_XEC
 	default y

soc/microchip/mec/mec174x/Kconfig

@@ -15,7 +15,4 @@ config SOC_SERIES_MEC174X
 
 if SOC_SERIES_MEC174X
 
-config RTOS_TIMER
-	bool "MEC174x RTOS Timer(32KHz) as kernel timer"
-
 endif # SOC_SERIES_MEC174X

soc/microchip/mec/mec174x/Kconfig.defconfig.series

@@ -12,6 +12,15 @@ config NUM_IRQS
 	default 194
 
 config CORTEX_M_SYSTICK
-	depends on !RTOS_TIMER
+	depends on !MCHP_MEC5_KTIMER
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency) if CORTEX_M_SYSTICK
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency) if MCHP_MEC5_KTIMER
+
+if MCHP_MEC5_KTIMER
+config SYS_CLOCK_TICKS_PER_SEC
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency)
+endif # MCHP_MEC5_KTIMER
 
 endif # SOC_SERIES_MEC174X

soc/microchip/mec/mec175x/Kconfig

@@ -15,7 +15,4 @@ config SOC_SERIES_MEC175X
 
 if SOC_SERIES_MEC175X
 
-config RTOS_TIMER
-	bool "MEC175x RTOS Timer(32KHz) as kernel timer"
-
 endif # SOC_SERIES_MEC175X

soc/microchip/mec/mec175x/Kconfig.defconfig.series

@@ -12,6 +12,15 @@ config NUM_IRQS
 	default 198
 
 config CORTEX_M_SYSTICK
-	depends on !RTOS_TIMER
+	depends on !MCHP_MEC5_KTIMER
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency) if CORTEX_M_SYSTICK
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency) if MCHP_MEC5_KTIMER
+
+if MCHP_MEC5_KTIMER
+config SYS_CLOCK_TICKS_PER_SEC
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency)
+endif # MCHP_MEC5_KTIMER
 
 endif # SOC_SERIES_MEC175X

soc/microchip/mec/mech172x/Kconfig

@@ -15,7 +15,4 @@ config SOC_SERIES_MECH172X
 
 if SOC_SERIES_MECH172X
 
-config RTOS_TIMER
-	bool "MECH172x RTOS Timer(32KHz) as kernel timer"
-
 endif # SOC_SERIES_MECH172X

soc/microchip/mec/mech172x/Kconfig.defconfig.series

@@ -12,6 +12,15 @@ config NUM_IRQS
 	default 181
 
 config CORTEX_M_SYSTICK
-	depends on !RTOS_TIMER
+	depends on !MCHP_MEC5_KTIMER
+
+config SYS_CLOCK_HW_CYCLES_PER_SEC
+	default $(dt_node_int_prop_int,/cpus/cpu@0,clock-frequency) if CORTEX_M_SYSTICK
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency) if MCHP_MEC5_KTIMER
+
+if MCHP_MEC5_KTIMER
+config SYS_CLOCK_TICKS_PER_SEC
+	default $(dt_node_int_prop_int,/soc/timer@40007400,clock-frequency)
+endif # MCHP_MEC5_KTIMER
 
 endif # SOC_SERIES_MECH172X