diff options
| author | Mike Frysinger | 2010-10-14 14:29:17 -0400 |
|---|---|---|
| committer | Mike Frysinger | 2010-10-14 20:23:26 -0400 |
| commit | 5641f34f8b83b3dcb64ba5f6c0f83d2204c41387 (patch) | |
| tree | 2875cb29ad161ab436193906faf34fbbd3f07cb0 /arch/blackfin | |
| parent | e5d8984be69f74627623573dc9bcf60711bfdfbf (diff) | |
Blackfin: workaround anomaly 05000440
We cannot rely on the syscontrol rom func to program PLL_DIV with anomaly
05000440 is in effect, so manually program the MMR when necessary.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/cpu/initcode.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/blackfin/cpu/initcode.c b/arch/blackfin/cpu/initcode.c index 007f5ce7757..433d477ddfa 100644 --- a/arch/blackfin/cpu/initcode.c +++ b/arch/blackfin/cpu/initcode.c @@ -391,7 +391,9 @@ program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs) /* Always programming PLL_LOCKCNT avoids Anomaly 05000430 */ ADI_SYSCTRL_VALUES memory_settings; - uint32_t actions = SYSCTRL_WRITE | SYSCTRL_PLLCTL | SYSCTRL_PLLDIV | SYSCTRL_LOCKCNT; + uint32_t actions = SYSCTRL_WRITE | SYSCTRL_PLLCTL | SYSCTRL_LOCKCNT; + if (!ANOMALY_05000440) + actions |= SYSCTRL_PLLDIV; if (CONFIG_HAS_VR) { actions |= SYSCTRL_VRCTL; if (CONFIG_VR_CTL_VAL & FREQ_MASK) @@ -410,6 +412,8 @@ program_clocks(ADI_BOOT_DATA *bs, bool put_into_srfs) serial_putc('e'); bfrom_SysControl(actions, &memory_settings, NULL); serial_putc('f'); + if (ANOMALY_05000440) + bfin_write_PLL_DIV(CONFIG_PLL_DIV_VAL); #if ANOMALY_05000432 bfin_write_SIC_IWR1(-1); #endif |