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ARM: atmel: spl: make css field configurable

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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>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
This commit is contained in:
Bo Shen 2014-10-24 16:13:26 +08:00 committed by Tom Rini
parent a5f35d63f2
commit da79fa4d77
1 changed files with 4 additions and 2 deletions
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6
arch/arm/cpu/at91-common/spl.c
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@ -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);