ARM: atmel: spl: make css field configurable
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>
diff --git a/arch/arm/cpu/at91-common/spl.c b/arch/arm/cpu/at91-common/spl.c
index 57fb041..81f5f53 100644
--- a/arch/arm/cpu/at91-common/spl.c
+++ b/arch/arm/cpu/at91-common/spl.c
@@ -76,10 +76,12 @@
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);