From: Martyn Welch <martyn.welch@collabora.co.uk>
Date: Fri, 18 Aug 2017 15:53:47 +0000 (+0100)
Subject: dt-bindings: misc: achc: Add device tree binding for GE ACHC
X-Git-Tag: microblaze-4.16-rc1~321^2~23^2~61
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=f9705438b0f7da5dd04e270a95536b36b3dca54a;p=linux-2.6-microblaze.git

dt-bindings: misc: achc: Add device tree binding for GE ACHC

Add Device Tree binding document for GE Healthcare USB Management
Controller (ACHC).

Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/misc/ge-achc.txt b/Documentation/devicetree/bindings/misc/ge-achc.txt
new file mode 100644
index 000000000000..77df94d7a32f
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/ge-achc.txt
@@ -0,0 +1,26 @@
+* 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>;
+};