From: Stephen Warren <swarren@xxxxxxxxxx>
pinctrl bindings can benefit from generic property names that define
which pins a "pin configuration node" affects, and which mux function
to select onto those pins. Document new properties for this purpose so
that other bindings may refer to them.
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
v2: Define the arguments that the pins and functions properties take.
---
.../devicetree/bindings/pinctrl/pinctrl-bindings.txt | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
index 31b0cb9..1958ca9 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
@@ -138,6 +138,9 @@ structure of the DT nodes that contain these properties.
Supported generic properties are:
+pins - the list of pins that properties in the node
+ apply to
+function - the mux function to select
bias-disable - disable any pin bias
bias-high-impedance - high impedance mode ("third-state", "floating")
bias-bus-hold - latch weakly
@@ -159,6 +162,19 @@ output-high - set the pin to output mode with high level
Some of the generic properties take arguments. For those that do, the
arguments are described below.
+- pins takes a list of pin names or IDs as a required argument. The specific
+ binding for the hardware defines:
+ - Whether the entries are integers or strings, and their meaning.
+
+- function takes a list of function names/IDs as a required argument. The
+ specific binding for the hardware defines:
+ - Whether the entries are integers or strings, and their meaning.
+ - Whether only a single entry is allowed (which is applied to all entries
+ in the pins property), or whether there may alternatively be one entry per
+ entry in the pins property, in which case the list lengths must match, and
+ for each list index i, the function at list index i is applied to the pin
+ at list index i.
+
- bias-pull-up, -down and -pin-default take as optional argument on hardware
supporting it the pull strength in Ohm. bias-disable will disable the pull.
--
1.8.1.5
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
