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>

1 files changed, 10 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
index 4f5a0c3af8b9..98eb94d91a1c 100644
--- 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.