Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

[firefly-linux-kernel-4.4.55.git] / Documentation / clk.txt

diff --git a/Documentation/clk.txt b/Documentation/clk.txt
index 4274a546eb578a0171a2b033c514f21ea3fc53db..b9911c27f496e1aeb5f2cb8f1b3c85345a606459 100644 (file)
--- a/Documentation/clk.txt
+++ b/Documentation/clk.txt
@@ -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.