linux-kernel - [PATCH V2 1/3] pinctrl: Document "function" + "pins" pinmux binding

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Message-Id: <1427757416-14491-2-git-send-email-abrestic@chromium.org>
Date:	Mon, 30 Mar 2015 16:16:54 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>
Cc:	devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Andrew Bresticker <abrestic@...omium.org>,
	Ezequiel Garcia <ezequiel.garcia@...tec.com>,
	James Hartley <james.hartley@...tec.com>,
	James Hogan <james.hogan@...tec.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Subject: [PATCH V2 1/3] pinctrl: Document "function" + "pins" pinmux binding

Currently the "function" + "groups" combination is the only documented
format for pinmux nodes, although many drivers use "function" + "pins".
Update the generic pinctrl binding to include the "function" + "pins"
combination as well.

Signed-off-by: Andrew Bresticker <abrestic@...omium.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.org>
---
New for v2.
---
 Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
index 47d84b6..f7688e2 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
@@ -133,6 +133,9 @@ pin multiplexing nodes:
 
 function		- the mux function to select
 groups			- the list of groups to select with this function
+			  (either this or "pins" must be specified)
+pins			- the list of pins to select with this function (either
+			  this or "groups" must be specified)
 
 Example:
 
@@ -144,6 +147,10 @@ state_1_node_a {
 	function = "spi0";
 	groups = "spi0pins";
 };
+state_2_node_a {
+	function = "i2c0";
+	pins = "mfio29", "mfio30";
+};
 
 == Generic pin configuration node content ==
 
-- 
2.2.0.rc0.207.ga3a616c

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