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authorFlorian Fainelli <f.fainelli@gmail.com>2014-06-25 16:41:13 -0700
committerRalf Baechle <ralf@linux-mips.org>2014-08-02 00:06:41 +0200
commitfd1bb4c9fc2c3df4d226acd2c277f479600cf7e0 (patch)
tree7fe75baaa81b56a6f95cb7b4ac8524fe1ed2e301 /Documentation/kernel-parameters.txt
parentc55b2851f901215fbfa46e4ea9cc04761c776815 (diff)
MIPS: Document the cca= command-line parameter
Commit 351336929ccf222ae38ff0cb7a8dd5fd5c6236a0 ("[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>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c1b9aa8c5a52..ea4f2dfba19a 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -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.