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authorMike Turquette <mturquette@linaro.org>2014-09-30 14:24:38 -0700
committerMike Turquette <mturquette@linaro.org>2014-09-30 14:33:02 -0700
commite156ee56cbe26c9e8df6619dac1a993245afc1d5 (patch)
tree6fedeffc6e6ba807388d5135affd0b2f649359b0 /Documentation
parent38bf3a79785f50ecad01e0ea60bf779507032984 (diff)
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doc/kernel-parameters.txt: clarify clk_ignore_unused
Refine the definition around clk_ignore_unused, which caused some confusion recently on the linux-fbdev and linux-arm-kernel mailing lists[0]. [0] http://lkml.kernel.org/r/<20140929135358.GC30998@ulmo> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt14
1 files changed, 9 insertions, 5 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 10d51c2f10d7..0ce01fb286c4 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -605,11 +605,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
See Documentation/s390/CommonIO for details.
clk_ignore_unused
[CLK]
- Keep all clocks already enabled by bootloader on,
- even if no driver has claimed them. This is useful
- for debug and development, but should not be
- needed on a platform with proper driver support.
- For more information, see Documentation/clk.txt.
+ Prevents the clock framework from automatically gating
+ clocks that have not been explicitly enabled by a Linux
+ device driver but are enabled in hardware at reset or
+ by the bootloader/firmware. Note that this does not
+ force such clocks to be always-on nor does it reserve
+ those clocks in any way. This parameter is useful for
+ debug and development, but should not be needed on a
+ platform with proper driver support. For more
+ information, see Documentation/clk.txt.
clock= [BUGS=X86-32, HW] gettimeofday clocksource override.
[Deprecated]