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pinctrl: DT: extend the pinmux property to support integers array

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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>
This commit is contained in:
Dong Aisheng 2017-06-22 22:49:00 +08:00 committed by Linus Walleij
parent 425562429d
commit 857f9dc3f6
1 changed files with 8 additions and 7 deletions
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15
Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
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@ -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.