From d8880a126d96ba0f9e0191826431650c24711d47 Mon Sep 17 00:00:00 2001
From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Date: Sat, 30 Mar 2013 00:51:12 +0100
Subject: [PATCH] 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>
---
Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt | 4 ++++
1 file changed, 4 insertions(+)
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 {
--
2.34.1