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| author | Heiko Schocher <hs@denx.de> | 2014-10-31 08:31:04 +0100 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-11-17 08:47:17 -0500 |
| commit | 5abc00d02082056765a8029675e7b05ab6c35263 (patch) | |
| tree | 381ca30258c8bcc82372e99ba2f903b9a74492c7 /arch/arm/cpu/armv7/at91/clock.c | |
| parent | 667af36905157b65fd79493e7f821db606ebbd33 (diff) | |
| download | u-boot-imx-5abc00d02082056765a8029675e7b05ab6c35263.zip u-boot-imx-5abc00d02082056765a8029675e7b05ab6c35263.tar.gz u-boot-imx-5abc00d02082056765a8029675e7b05ab6c35263.tar.bz2 | |
arm, spl, at91: add at91sam9260 and at91sam9g45 spl support
add support for using spl code on at91sam9260 and at91sam9g45
based boards.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Bo Shen <voice.shen@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
[adopt Bo's change in spl.c]
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'arch/arm/cpu/armv7/at91/clock.c')
| -rw-r--r-- | arch/arm/cpu/armv7/at91/clock.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/at91/clock.c b/arch/arm/cpu/armv7/at91/clock.c index 36ed4a6..2cdddb2 100644 --- a/arch/arm/cpu/armv7/at91/clock.c +++ b/arch/arm/cpu/armv7/at91/clock.c @@ -111,6 +111,35 @@ int at91_clock_init(unsigned long main_clock) return 0; } +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_CSS_MASK | + AT91_PMC_MCKR_PRES_MASK | + AT91_PMC_MCKR_MDIV_MASK | + AT91_PMC_MCKR_PLLADIV_2); + 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); + + while (!(readl(&pmc->sr) & AT91_PMC_MCKRDY)) + ; +} + void at91_periph_clk_enable(int id) { struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; |