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authorDong Aisheng <aisheng.dong@nxp.com>2017-06-22 22:49:00 +0800
committerLinus Walleij <linus.walleij@linaro.org>2017-06-29 14:35:00 +0200
commit857f9dc3f60fba212285eae7b3266559c355a616 (patch)
treef8dba2e4bfc6e6791a973a14452560873db60a08 /Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
parent425562429d4f3b134c7390249c23a3f647aad199 (diff)
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pinctrl: DT: extend the pinmux property to support integers array
Some platforms may need more than one integer to represent a complete pinmux binding, so let's extend the pinmux property to allow to accept integer array instead of only a single integer. Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: Shawn Guo <shawnguo@kernel.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt')
-rw-r--r--Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt15
1 files changed, 8 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
index 2d4ef9f0fded..62d0f33fa65e 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
@@ -204,21 +204,22 @@ each single pin the number of required sub-nodes containing "pin" and
maintain.
For cases like this, the pin controller driver may use the pinmux helper
-property, where the pin identifier is packed with mux configuration settings
-in a single integer.
+property, where the pin identifier is provided with mux configuration settings
+in a pinmux group. A pinmux group consists of the pin identifier and mux
+settings represented as a single integer or an array of integers.
-The pinmux property accepts an array of integers, each of them describing
+The pinmux property accepts an array of pinmux groups, each of them describing
a single pin multiplexing configuration.
pincontroller {
state_0_node_a {
- pinmux = <PIN_ID_AND_MUX>, <PIN_ID_AND_MUX>, ...;
+ pinmux = <PINMUX_GROUP>, <PINMUX_GROUP>, ...;
};
};
Each individual pin controller driver bindings documentation shall specify
-how those values (pin IDs and pin multiplexing configuration) are defined and
-assembled together.
+how pin IDs and pin multiplexing configuration are defined and assembled
+together in a pinmux group.
== Generic pin configuration node content ==
@@ -306,7 +307,7 @@ arguments are described below.
- pinmux takes a list of pin IDs and mux settings as required argument. The
specific bindings for the hardware defines:
- How pin IDs and mux settings are defined and assembled together in a single
- integer.
+ integer or an array of integers.
- 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.
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