This commit adds 'clock-frequency' property to the cpu nodes.
The clock frequency specified in the added property is used
during platform configuration. Examples:
- The SWO logger uses clock frequency to configure SWO output.
- Plenty of platforms need CPU clock specified for their HAL.
- Most of devices with USB needs information about CPU clock
in order to configure USB clock source.
Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
Instead of blind copy of nsim_em.dts re-structure this way:
* nsim.dtsi - Top-level "board" description re-usable for
| all nSIM-based "boards".
|
| Even though it's not needed right now but it
| allows to add other ARC core families in the future.
|
\_ nsim_em.dtsi - Common definitions for boards with ARC EM cores
|
\_ Real boards with ARC EM cores
|
\ nsim_em.dts
\ nsim_sem.dts
\ nsim_em_mpu_stack_guard.dts
\ nsim_sem_mpu_stack_guard.dts
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
ARC nSIM simulates all flavors or ARC cores so there's
no point in limiting its usage to ARC EM family only.
Moreover with upcoming addition of ARC HS family support
in Zephyr we'll be re-using nSIM "board" for them as well.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Piotr Zięcik