[RFC,1/3] Documentation: dt: Add devicetree bindings for NI USRP E3xx pinconf
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Message ID 1446766883-25703-2-git-send-email-moritz.fischer@ettus.com
State New
Headers show

Commit Message

Moritz Fischer Nov. 5, 2015, 11:41 p.m. UTC
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
---
 .../devicetree/bindings/pinctrl/pinctrl-e3xx.txt   | 27 ++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-e3xx.txt

Comments

Arnd Bergmann Nov. 6, 2015, 8:56 a.m. UTC | #1
On Thursday 05 November 2015 15:41:21 Moritz Fischer wrote:
> +       e3xx_pinctrl: e3xx-pinctrl@40200a00 {

Just "pinctrl@40200a00"

> +               compatible = "ettus,e3xx-pinctrl-1.0";

no wildcards in the name, use exact chip revisions here. If two chips
use the same one, add a fallback to the older version in the dts file
of the newer one.

	Arnd
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Patch
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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@40200a00 {
+		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