dt-bindings: qca7000: append UART interface to binding

This merges the serdev binding for the QCA7000 UART driver (Ethernet over
UART) into the existing document.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/qca,qca7000.txt b/Documentation/devicetree/bindings/net/qca,qca7000.txt
index a37f6567839983f935fb980159573ef12a047996..6d9efb2eb9a53d4495943122e19c87b3f7f7a889 100644 (file)
--- a/Documentation/devicetree/bindings/net/qca,qca7000.txt
+++ b/Documentation/devicetree/bindings/net/qca,qca7000.txt
@@ -54,3 +54,35 @@ ssp2: spi@80014000 {
                local-mac-address = [ A0 B0 C0 D0 E0 F0 ];
        };
 };
+
+(b) Ethernet over UART
+
+In order to use the QCA7000 as UART slave it must be defined as a child of a
+UART master in the device tree. It is possible to preconfigure the UART
+settings of the QCA7000 firmware, but it's not possible to change them during
+runtime.
+
+Required properties:
+- compatible        : Should be "qca,qca7000"
+
+Optional properties:
+- local-mac-address : see ./ethernet.txt
+- current-speed     : current baud rate of QCA7000 which defaults to 115200
+                     if absent, see also ../serial/slave-device.txt
+
+UART Example:
+
+/* Freescale i.MX28 UART */
+auart0: serial@8006a000 {
+       compatible = "fsl,imx28-auart", "fsl,imx23-auart";
+       reg = <0x8006a000 0x2000>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&auart0_2pins_a>;
+       status = "okay";
+
+       qca7000: ethernet {
+               compatible = "qca,qca7000";
+               local-mac-address = [ A0 B0 C0 D0 E0 F0 ];
+               current-speed = <38400>;
+       };
+};