The clock source for master clock can be slow clock, main clock, plla clock or upll clock. So, make the clock source selection field in mckr can be configured.
Signed-off-by: Bo Shen voice.shen@atmel.com ---
arch/arm/cpu/at91-common/spl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/at91-common/spl.c b/arch/arm/cpu/at91-common/spl.c index 1d7770e..3ceb31b 100644 --- a/arch/arm/cpu/at91-common/spl.c +++ b/arch/arm/cpu/at91-common/spl.c @@ -76,10 +76,12 @@ void at91_mck_init(u32 mckr) u32 tmp;
tmp = readl(&pmc->mckr); - tmp &= ~(AT91_PMC_MCKR_PRES_MASK | + tmp &= ~(AT91_PMC_MCKR_CSS_MASK | + AT91_PMC_MCKR_PRES_MASK | AT91_PMC_MCKR_MDIV_MASK | AT91_PMC_MCKR_PLLADIV_2); - tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK | + tmp |= mckr & (AT91_PMC_MCKR_CSS_MASK | + AT91_PMC_MCKR_PRES_MASK | AT91_PMC_MCKR_MDIV_MASK | AT91_PMC_MCKR_PLLADIV_2); writel(tmp, &pmc->mckr);