Add plla and mck initialize function.
Signed-off-by: Bo Shen <voice.s...@atmel.com>
---
arch/arm/cpu/armv7/at91/clock.c | 27 ++++++++++++++++++++++++++
arch/arm/include/asm/arch-at91/at91_common.h | 2 ++
2 files changed, 29 insertions(+)
diff --git a/arch/arm/cpu/armv7/at91/clock.c b/arch/arm/cpu/armv7/at91/clock.c
index 1588e0c..ec92950 100644
--- a/arch/arm/cpu/armv7/at91/clock.c
+++ b/arch/arm/cpu/armv7/at91/clock.c
@@ -120,3 +120,30 @@ void at91_periph_clk_enable(int id)
else
writel(1 << id, &pmc->pcer);
}
+
+void at91_plla_init(u32 pllar, int timeout)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ writel(pllar, &pmc->pllar);
+ while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY)))
+ timeout--;
+}
+
+void at91_mck_init(u32 mckr, int timeout)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+ u32 tmp;
+
+ tmp = readl(&pmc->mckr);
+ tmp &= ~(AT91_PMC_MCKR_PRES_MASK |
+ AT91_PMC_MCKR_MDIV_MASK |
+ AT91_PMC_MCKR_PLLADIV_2);
+ tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK |
+ AT91_PMC_MCKR_MDIV_MASK |
+ AT91_PMC_MCKR_PLLADIV_2);
+ writel(tmp, &pmc->mckr);
+
+ while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY))
+ timeout--;
+}
diff --git a/arch/arm/include/asm/arch-at91/at91_common.h
b/arch/arm/include/asm/arch-at91/at91_common.h
index abcb97d..a692275 100644
--- a/arch/arm/include/asm/arch-at91/at91_common.h
+++ b/arch/arm/include/asm/arch-at91/at91_common.h
@@ -22,5 +22,7 @@ void at91_spi1_hw_init(unsigned long cs_mask);
void at91_udp_hw_init(void);
void at91_uhp_hw_init(void);
void at91_lcd_hw_init(void);
+void at91_plla_init(u32 pllar, int timeout);
+void at91_mck_init(u32 mckr, int timeout);
#endif /* AT91_COMMON_H */
--
1.7.9.5
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