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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2013-03-30 00:51:12 +0100
committerShawn Guo <shawn.guo@linaro.org>2013-04-04 21:22:42 +0800
commitd8880a126d96ba0f9e0191826431650c24711d47 (patch)
tree5521acafed14e03d8cab3d0f46b92c42e77d43c0 /Documentation/devicetree
parent7d403408648425450841423733dcd86e606a85c3 (diff)
downloadlinux-d8880a126d96ba0f9e0191826431650c24711d47.tar.gz
pinctrl: pinctrl-mxs: document the missing pull-ups
Some pins on the i.mx23 and i.mx28 are missing pull-ups, document that oddity because it was difficult to know the expected behaviour. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt
index f7e8e8f4d9a3..3077370c89af 100644
--- a/Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt
@@ -70,6 +70,10 @@ Optional subnode-properties:
0: Disable the internal pull-up
1: Enable the internal pull-up
+Note that when enabling the pull-up, the internal pad keeper gets disabled.
+Also, some pins doesn't have a pull up, in that case, setting the fsl,pull-up
+will only disable the internal pad keeper.
+
Examples:
pinctrl@80018000 {