diff options
Diffstat (limited to 'arch/arm/cpu/arm926ejs/at91')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c | 22 | ||||
| -rw-r--r-- | arch/arm/cpu/arm926ejs/at91/clock.c | 60 |
2 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c index cae4abcdf4..7a7fd7dfb2 100644 --- a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c @@ -8,8 +8,10 @@ #include <common.h> #include <asm/io.h> +#include <asm/arch/at91sam9260_matrix.h> #include <asm/arch/at91_common.h> #include <asm/arch/at91_pmc.h> +#include <asm/arch/at91sam9_sdramc.h> #include <asm/arch/gpio.h> /* @@ -207,3 +209,23 @@ void at91_mci_hw_init(void) #endif } #endif + +void at91_sdram_hw_init(void) +{ + at91_set_a_periph(AT91_PIO_PORTC, 16, 0); + at91_set_a_periph(AT91_PIO_PORTC, 17, 0); + at91_set_a_periph(AT91_PIO_PORTC, 18, 0); + at91_set_a_periph(AT91_PIO_PORTC, 19, 0); + at91_set_a_periph(AT91_PIO_PORTC, 20, 0); + at91_set_a_periph(AT91_PIO_PORTC, 21, 0); + at91_set_a_periph(AT91_PIO_PORTC, 22, 0); + at91_set_a_periph(AT91_PIO_PORTC, 23, 0); + at91_set_a_periph(AT91_PIO_PORTC, 24, 0); + at91_set_a_periph(AT91_PIO_PORTC, 25, 0); + at91_set_a_periph(AT91_PIO_PORTC, 26, 0); + at91_set_a_periph(AT91_PIO_PORTC, 27, 0); + at91_set_a_periph(AT91_PIO_PORTC, 28, 0); + at91_set_a_periph(AT91_PIO_PORTC, 29, 0); + at91_set_a_periph(AT91_PIO_PORTC, 30, 0); + at91_set_a_periph(AT91_PIO_PORTC, 31, 0); +} diff --git a/arch/arm/cpu/arm926ejs/at91/clock.c b/arch/arm/cpu/arm926ejs/at91/clock.c index 31315b58e4..f363982d03 100644 --- a/arch/arm/cpu/arm926ejs/at91/clock.c +++ b/arch/arm/cpu/arm926ejs/at91/clock.c @@ -187,3 +187,63 @@ int at91_clock_init(unsigned long main_clock) return 0; } + +#if !defined(AT91_PLL_LOCK_TIMEOUT) +#define AT91_PLL_LOCK_TIMEOUT 1000000 +#endif + +void at91_plla_init(u32 pllar) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + + writel(pllar, &pmc->pllar); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKA | AT91_PMC_MCKRDY))) { + timeout--; + if (timeout == 0) + break; + } +} +void at91_pllb_init(u32 pllbr) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + + writel(pllbr, &pmc->pllbr); + while (!(readl(&pmc->sr) & (AT91_PMC_LOCKB | AT91_PMC_MCKRDY))) { + timeout--; + if (timeout == 0) + break; + } +} + +void at91_mck_init(u32 mckr) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + int timeout = AT91_PLL_LOCK_TIMEOUT; + u32 tmp; + + tmp = readl(&pmc->mckr); + tmp &= ~(AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_MASK | + AT91_PMC_MCKR_CSS_MASK); + tmp |= mckr & (AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_MASK | + AT91_PMC_MCKR_CSS_MASK); + writel(tmp, &pmc->mckr); + + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) { + timeout--; + if (timeout == 0) + break; + } +} + +void at91_periph_clk_enable(int id) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + writel(1 << id, &pmc->pcer); +} |