diff options
Diffstat (limited to 'board/atmel/sama5d2_xplained/sama5d2_xplained.c')
| -rw-r--r-- | board/atmel/sama5d2_xplained/sama5d2_xplained.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/board/atmel/sama5d2_xplained/sama5d2_xplained.c b/board/atmel/sama5d2_xplained/sama5d2_xplained.c index 7e0cb42..5758653 100644 --- a/board/atmel/sama5d2_xplained/sama5d2_xplained.c +++ b/board/atmel/sama5d2_xplained/sama5d2_xplained.c @@ -247,6 +247,16 @@ void at91_pmc_init(void) struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; u32 tmp; + /* + * while coming from the ROM code, we run on PLLA @ 492 MHz / 164 MHz + * so we need to slow down and configure MCKR accordingly. + * This is why we have a special flavor of the switching function. + */ + tmp = AT91_PMC_MCKR_PLLADIV_2 | + AT91_PMC_MCKR_MDIV_3 | + AT91_PMC_MCKR_CSS_MAIN; + at91_mck_init_down(tmp); + tmp = AT91_PMC_PLLAR_29 | AT91_PMC_PLLXR_PLLCOUNT(0x3f) | AT91_PMC_PLLXR_MUL(82) | |