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MIPS: Document the cca= command-line parameter

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Commit 351336929c ("[MIPS] Allow setting
of the cache attribute at run time") introduced the 'cca=' kernel
command-line parameter which allows overriding the kernel pages
cacheable attributes, document that parameter.

[ralf@linux-mips.org: replace @mips.com email addresses with it's imgtec.com
equivalent in this commit message.  Rephrase slightly for a bit more
pedantic correctness.]

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: blogic@openwrt.org
Cc: anemo@mba.ocn.ne.jp
Cc: chris.dearman@imgtec.com
Patchwork: https://patchwork.linux-mips.org/patch/7182/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Florian Fainelli 2014-06-25 16:41:13 -07:00 committed by Ralf Baechle
parent c55b2851f9
commit fd1bb4c9fc
1 changed files with 6 additions and 0 deletions
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6
Documentation/kernel-parameters.txt
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@ -566,6 +566,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
possible to determine what the correct size should be.
This option provides an override for these situations.
cca= [MIPS] Override the kernel pages' cache coherency
algorithm. Accepted values range from 0 to 7
inclusive. See arch/mips/include/asm/pgtable-bits.h
for platform specific values (SB1, Loongson3 and
others).
ccw_timeout_log [S390]
See Documentation/s390/CommonIO for details.