linux-kernel - [RFC 1/3] Documentation: dt: Add devicetree bindings for NI USRP E3xx pinconf

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Date:	Thu,  5 Nov 2015 15:41:21 -0800
From:	Moritz Fischer <moritz.fischer@...us.com>
To:	linus.walleij@...aro.org
Cc:	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	devicetree@...r.kernel.org,
	Moritz Fischer <moritz.fischer@...us.com>
Subject: [RFC 1/3] Documentation: dt: Add devicetree bindings for NI USRP E3xx pinconf

Signed-off-by: Moritz Fischer <moritz.fischer@...us.com>
---
 .../devicetree/bindings/pinctrl/pinctrl-e3xx.txt   | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-e3xx.txt

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-e3xx.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-e3xx.txt
new file mode 100644
index 0000000..2bfbd21
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-e3xx.txt
@@ -0,0 +1,27 @@
+USRP E3xx Pincontrol bindings
+
+The pins of the NI Ettus Research USRP E3xx idle image can be configured for different
+daughterboard configurations. This pinmux is implemented in an FPGA as soft core.
+
+Required properties:
+- compatible: Must be one of the following:
+  - "ettus,pinctrl-e3xx-1.0"
+- clocks: The clock driving the pinmux
+
+Example:
+
+	e3xx_pinctrl: e3xx-pinctrl@...00a00 {
+		compatible = "ettus,e3xx-pinctrl-1.0";
+		reg = <0x40200a00 0x1000>;
+		clocks = <&clkc 15>;
+
+		foo_state: pinconf {
+			conf {
+				pins = E31X_LED_RX1_RX;
+				output-low;
+			};
+		};
+	};
+
+Note: Constants that facilitate creation of devicetree files are available in
+      include/dt-bindings/pinctrl/pinctrl-e3xx.h
-- 
2.4.3

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