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| author | Sonic Zhang <sonic.zhang@analog.com> | 2009-05-07 10:04:19 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 06:11:35 -0400 |
| commit | 7f3aee3c187641ec7c7e260d9cabb71ac4ac9f7c (patch) | |
| tree | f4c43c51e75bf5c74bf73da44e3d2d0789d7e340 /arch/blackfin | |
| parent | d8804adf52f5991388fa9af77428e4cc7768059d (diff) | |
| download | linux-7f3aee3c187641ec7c7e260d9cabb71ac4ac9f7c.tar.gz linux-7f3aee3c187641ec7c7e260d9cabb71ac4ac9f7c.tar.bz2 linux-7f3aee3c187641ec7c7e260d9cabb71ac4ac9f7c.zip | |
Blackfin: detect anomaly 05000274
Detect and reject operating conditions for anomaly 05000274 since the
problem cannot be worked around in software.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 9 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/cpufreq.c | 3 |
2 files changed, 4 insertions, 8 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 5a4a03670085..dc30e0aa54cd 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -801,10 +801,8 @@ void __init setup_arch(char **cmdline_p) cclk = get_cclk(); sclk = get_sclk(); -#if !defined(CONFIG_BFIN_KERNEL_CLOCK) - if (ANOMALY_05000273 && cclk == sclk) - panic("ANOMALY 05000273, SCLK can not be same as CCLK"); -#endif + if ((ANOMALY_05000273 || ANOMALY_05000274) && (cclk >> 1) < sclk) + panic("ANOMALY 05000273 or 05000274: CCLK must be >= 2*SCLK"); #ifdef BF561_FAMILY if (ANOMALY_05000266) { @@ -903,9 +901,6 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Processor Speed: %lu MHz core clock and %lu MHz System Clock\n", cclk / 1000000, sclk / 1000000); - if (ANOMALY_05000273 && (cclk >> 1) <= sclk) - printk("\n\n\nANOMALY_05000273: CCLK must be >= 2*SCLK !!!\n\n\n"); - setup_bootmem_allocator(); paging_init(); diff --git a/arch/blackfin/mach-common/cpufreq.c b/arch/blackfin/mach-common/cpufreq.c index 72e16605ca09..70e3411f558c 100644 --- a/arch/blackfin/mach-common/cpufreq.c +++ b/arch/blackfin/mach-common/cpufreq.c @@ -140,7 +140,8 @@ static int __init __bfin_cpu_init(struct cpufreq_policy *policy) cclk = get_cclk() / 1000; sclk = get_sclk() / 1000; -#if ANOMALY_05000273 || (!defined(CONFIG_BF54x) && defined(CONFIG_BFIN_DCACHE)) +#if ANOMALY_05000273 || ANOMALY_05000274 || \ + (!defined(CONFIG_BF54x) && defined(CONFIG_BFIN_DCACHE)) min_cclk = sclk * 2; #else min_cclk = sclk; |