From: Aurelien Jarno <aurelien@aurel32.net>
To: linux-mips@linux-mips.org
Subject: MIPS 20Kc and WAIT instruction
Date: Mon, 11 Jun 2007 11:54:07 +0200 [thread overview]
Message-ID: <466D1BBF.6030403@aurel32.net> (raw)
Hi all,
The latest kernels from kernel.org or linux-mips.org do not enter low
power mode when the CPU is idle on a MIPS 20Kc CPU.
Looking at the code in arch/mips/kernel/cpu-probe.c, the "case"
corresponding to the 20Kc CPU is commented out:
case CPU_5KC:
/* case CPU_20KC:*/
case CPU_24K:
According to the datasheet this CPU supports the WAIT instruction, so I
don't really understand why it is disabled in the kernel. Does anybody
know why?
Thanks,
Aurelien
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' aurel32@debian.org | aurelien@aurel32.net
`- people.debian.org/~aurel32 | www.aurel32.net
next reply other threads:[~2007-06-11 9:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-11 9:54 Aurelien Jarno [this message]
2007-06-12 10:18 ` MIPS 20Kc and WAIT instruction Ralf Baechle
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