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Date: Tue, 6 Aug 2013 11:10:32 -0600 From: Stephen Warren <swarren@...dotorg.org> To: Linus Walleij <linus.walleij@...aro.org> Cc: Pawel Moll <pawel.moll@....com>, Rob Herring <rob.herring@...xeda.com>, Ian Campbell <ian.campbell@...rix.com>, Mark Rutland <mark.rutland@....com>, Laxman Dewangan <ldewangan@...dia.com>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Stephen Warren <swarren@...dia.com> Subject: [PATCH V2 2/2] pinctrl: add generic pins and functions properties From: Stephen Warren <swarren@...dia.com> 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@...dia.com> --- 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 linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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