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Blackfin: document anomaly 05000234 workaround

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Note the reason for using CHIPD over DSPID.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Robin Getz
2009-04-23 14:15:04 +00:00
committed by Mike Frysinger
parent fecbd7366b
commit bc4d6f36db
1 changed files with 2 additions and 2 deletions
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4
arch/blackfin/include/asm/processor.h
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@@ -131,8 +131,8 @@ unsigned long get_wchan(struct task_struct *p);
/* Get the Silicon Revision of the chip */ /* Get the Silicon Revision of the chip */
static inline uint32_t __pure bfin_revid(void) static inline uint32_t __pure bfin_revid(void)
{ {
/* stored in the upper 4 bits */ /* Always use CHIPID, to work around ANOMALY_05000234 */
uint32_t revid = bfin_read_CHIPID() >> 28; uint32_t revid = (bfin_read_CHIPID() & CHIPID_VERSION) >> 28;
#ifdef CONFIG_BF52x #ifdef CONFIG_BF52x
/* ANOMALY_05000357 /* ANOMALY_05000357