Add Device Tree binding document for GE Healthcare USB Management
Controller (ACHC).
Signed-off-by: Martyn Welch <martyn.we...@collabora.co.uk>
---
Documentation/devicetree/bindings/misc/ge-achc.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/ge-achc.txt
diff --git a/Documentation/devicetree/bindings/misc/ge-achc.txt
b/Documentation/devicetree/bindings/misc/ge-achc.txt
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+* GE Healthcare USB Management Controller
+
+A device which handles data aquisition from compatible USB based peripherals.
+SPI is used for device management.
+
+Note: This device does not expose the peripherals as USB devices.
+
+Required properties:
+
+- compatible : Should be "ge,achc"
+
+Required SPI properties:
+
+- reg : Should be address of the device chip select within
+ the controller.
+
+- spi-max-frequency : Maximum SPI clocking speed of device in Hz, should be
+ 1MHz for the GE ACHC.
+
+Example:
+
+spidev0: spi@0 {
+ compatible = "ge,achc";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+};
--
1.8.3.1
