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drivers: timer: nRF SoC Series RTC system clock implementation

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The nRF5x series SoCs do not implement systick, hence we disable
CORTEX_M_SYSTICK.
Instead, use nRF SoC Series NRF_RTC1 for system clock interfaces.
The kernel system clock interface is implemented using the low
power real time counter NRF_RTC1. NRF_RTC0 is used by the BLE
controller.

In addition, cleanup nRF5x series defconfig to be consistent.

Jira: ZEP-742
Jira: ZEP-1308
Jira: ZEP-1315

Change-id: I0f6cc1836fe0820a65f2cbb02cf5ae7e9eb92e1d
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Vinayak Chettimada 2016-11-22 17:03:32 +01:00 • committed by Anas Nashif
commit a100ada866
8 changed files with 150 additions and 10 deletions
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11
arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.series
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@ -22,12 +22,23 @@ source "arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52*"
config SOC_SERIES
default nrf52
config SYS_CLOCK_HW_CYCLES_PER_SEC
int
default 32768
config SYS_POWER_MANAGEMENT
default y
config SRAM_BASE_ADDRESS
default 0x20000000
config FLASH_BASE_ADDRESS
default 0x00000000
config NUM_IRQS
int
default 39
config NUM_IRQ_PRIO_BITS
int
default 3