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SM501: Check SM501 ID register on initialisation

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When binding the driver, check the ID register for a valid identity, in case
the SM501 is not functioning correctly.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ben Dooks 2007-06-23 17:16:31 -07:00 • committed by Linus Torvalds
parent ffd65af0e6
commit 1e27dbe774
2 changed files with 13 additions and 4 deletions
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3
include/linux/sm501-regs.h
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@ -109,6 +109,9 @@
#define SM501_DEVICEID (0x000060)
/* 0x050100A0 */
#define SM501_DEVICEID_SM501 (0x05010000)
#define SM501_DEVICEID_IDMASK (0xffff0000)
#define SM501_PLLCLOCK_COUNT (0x000064)
#define SM501_MISC_TIMING (0x000068)
#define SM501_CURRENT_SDRAM_CLOCK (0x00006C)