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cpu/nrf52: only enable instruction cache if available

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The instruction cache is not available on all nrf52 MCUs.
This commit is contained in:
Benjamin Valentin 2020-06-23 00:30:18 +02:00
parent ea2638dcac
commit 2f236cb092
1 changed files with 2 additions and 0 deletions
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2
cpu/nrf52/cpu.c
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@ -68,8 +68,10 @@ void cpu_init(void)
/* initialize hf clock */
clock_init_hf();
#ifdef NVMC_ICACHECNF_CACHEEN_Msk
/* enable instruction cache */
NRF_NVMC->ICACHECNF = (NVMC_ICACHECNF_CACHEEN_Msk);
#endif
/* softdevice needs to be enabled from ISR context */
#ifdef SOFTDEVICE_PRESENT