Add plla and mck initialize function.
Signed-off-by: Bo Shen voice.shen@atmel.com
--- Changes in v2: - None
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..d392f54 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) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + writel(pllar, &pmc->pllar); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY))) + ; +} + +void at91_mck_init(u32 mckr) +{ + 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)) + ; +} diff --git a/arch/arm/include/asm/arch-at91/at91_common.h b/arch/arm/include/asm/arch-at91/at91_common.h index abcb97d..728a9fb 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); +void at91_mck_init(u32 mckr);
#endif /* AT91_COMMON_H */