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author | Frederic Weisbecker <fweisbec@gmail.com> | 2013-05-02 17:37:49 +0200 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-05-02 17:54:19 +0200 |
commit | c032862fba51a3ca504752d3a25186b324c5ce83 (patch) | |
tree | 955dc2ba4ab3df76ecc2bb780ee84aca04967e8d /Documentation/clk.txt | |
parent | fda76e074c7737fc57855dd17c762e50ed526052 (diff) | |
parent | 8700c95adb033843fc163d112b9d21d4fda78018 (diff) | |
download | talos-op-linux-c032862fba51a3ca504752d3a25186b324c5ce83.tar.gz talos-op-linux-c032862fba51a3ca504752d3a25186b324c5ce83.zip |
Merge commit '8700c95adb03' into timers/nohz
The full dynticks tree needs the latest RCU and sched
upstream updates in order to fix some dependencies.
Merge a common upstream merge point that has these
updates.
Conflicts:
include/linux/perf_event.h
kernel/rcutree.h
kernel/rcutree_plugin.h
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'Documentation/clk.txt')
-rw-r--r-- | Documentation/clk.txt | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/Documentation/clk.txt b/Documentation/clk.txt index 1943fae014fd..b9911c27f496 100644 --- a/Documentation/clk.txt +++ b/Documentation/clk.txt @@ -174,9 +174,9 @@ int clk_foo_enable(struct clk_hw *hw) }; Below is a matrix detailing which clk_ops are mandatory based upon the -hardware capbilities of that clock. A cell marked as "y" means +hardware capabilities of that clock. A cell marked as "y" means mandatory, a cell marked as "n" implies that either including that -callback is invalid or otherwise uneccesary. Empty cells are either +callback is invalid or otherwise unnecessary. Empty cells are either optional or must be evaluated on a case-by-case basis. clock hardware characteristics @@ -231,3 +231,14 @@ To better enforce this policy, always follow this simple rule: any statically initialized clock data MUST be defined in a separate file from the logic that implements its ops. Basically separate the logic from the data and all is well. + + Part 6 - Disabling clock gating of unused clocks + +Sometimes during development it can be useful to be able to bypass the +default disabling of unused clocks. For example, if drivers aren't enabling +clocks properly but rely on them being on from the bootloader, bypassing +the disabling means that the driver will remain functional while the issues +are sorted out. + +To bypass this disabling, include "clk_ignore_unused" in the bootargs to the +kernel. |