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| author | Mike Frysinger <vapier@gentoo.org> | 2009-04-04 08:10:22 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-04-06 17:37:48 -0400 |
| commit | 48ab1509254a4c175e4f65c478a978928ffe09ec (patch) | |
| tree | 16a43aec668305a3dce6e08be4fc5f1387574cfe /cpu/blackfin/initcode.c | |
| parent | ce1fe4ba6bb9df7c57351436fa17d1af8bbe7916 (diff) | |
| download | u-boot-imx-48ab1509254a4c175e4f65c478a978928ffe09ec.zip u-boot-imx-48ab1509254a4c175e4f65c478a978928ffe09ec.tar.gz u-boot-imx-48ab1509254a4c175e4f65c478a978928ffe09ec.tar.bz2 | |
Blackfin: add workaround for anomaly 05000242
DESCRIPTION:
If the DF bit is set prior to a hardware reset, the PLL will continue to
divide CLKIN by 2 after the hardware reset, but the DF bit itself will be
cleared in the PLL_CTL register.
WORKAROUND:
Reprogram the PLL with DF cleared if the desire is to not divide CLKIN by
2 after reset.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu/blackfin/initcode.c')
| -rw-r--r-- | cpu/blackfin/initcode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c index d44c6a6..7f54860 100644 --- a/cpu/blackfin/initcode.c +++ b/cpu/blackfin/initcode.c @@ -401,7 +401,7 @@ void initcode(ADI_BOOT_DATA *bootstruct) /* Only reprogram when needed to avoid triggering unnecessary * PLL relock sequences. */ - if (bfin_read_PLL_CTL() != CONFIG_PLL_CTL_VAL) { + if (ANOMALY_05000242 || bfin_read_PLL_CTL() != CONFIG_PLL_CTL_VAL) { serial_putc('!'); bfin_write_PLL_CTL(CONFIG_PLL_CTL_VAL); asm("idle;"); |