pinctrl: specify bindings for pins and groups

Pin configurations can be per-pin or per-group. Make sure that the
per-group case is covered by the bindings.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
index 4f5a0c3af8b92c41a00287e8ab49fc65d93e165a..98eb94d91a1c3680de8695d83e207f10205b3ae2 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
@@ -157,7 +157,12 @@ 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
+                         apply to (either this or "group" has to be
+                         specified)
+group                  - the group to apply the properties to, if the driver
+                         supports configuration of whole groups rather than
+                         individual pins (either this or "pins" has to be
+                         specified)
 bias-disable           - disable any pin bias
 bias-high-impedance    - high impedance mode ("third-state", "floating")
 bias-bus-hold          - latch weakly
@@ -190,6 +195,10 @@ state_1_node_a {
        pins = "GPIO1_AJ3", "GPIO3_AH3"; /* RTS+TXD */
        output-high;
 };
+state_2_node_a {
+       group = "foo-group";
+       bias-pull-up;
+};
 
 Some of the generic properties take arguments. For those that do, the
 arguments are described below.