diff options
| author | Heiko Schocher | 2016-08-17 09:13:24 +0200 |
|---|---|---|
| committer | Andreas Bießmann | 2016-10-28 18:37:13 +0200 |
| commit | 806a5a3958e4af483e529cf0db75464055d6e13a (patch) | |
| tree | bf7eab9fca9d4d2c714e538640981d8d6346c263 /arch/arm/mach-at91 | |
| parent | 20e00c13681b69ad7f858a5e28baeb0c6e61c9e6 (diff) | |
ARM: at91: clock: correct PRES offset for at91sam9x5
on at91sam9x5 PRES offset is 4 in the PMC master
clock register.
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Andreas Bießmann <andreas@biessmann.org>
Diffstat (limited to 'arch/arm/mach-at91')
| -rw-r--r-- | arch/arm/mach-at91/arm926ejs/clock.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/arm926ejs/clock.c b/arch/arm/mach-at91/arm926ejs/clock.c index c8d24ae8265..e3181fab84f 100644 --- a/arch/arm/mach-at91/arm926ejs/clock.c +++ b/arch/arm/mach-at91/arm926ejs/clock.c @@ -162,7 +162,13 @@ int at91_clock_init(unsigned long main_clock) gd->arch.mck_rate_hz = at91_css_to_rate(mckr & AT91_PMC_MCKR_CSS_MASK); freq = gd->arch.mck_rate_hz; +#if defined(CONFIG_AT91SAM9X5) + /* different in prescale on at91sam9x5 */ + freq /= (1 << ((mckr & AT91_PMC_MCKR_PRES_MASK) >> 4)); +#else freq /= (1 << ((mckr & AT91_PMC_MCKR_PRES_MASK) >> 2)); /* prescale */ +#endif + #if defined(CONFIG_AT91SAM9G20) /* mdiv ; (x >> 7) = ((x >> 8) * 2) */ gd->arch.mck_rate_hz = (mckr & AT91_PMC_MCKR_MDIV_MASK) ? |