From 6a1db289d00b58ee5dec2e9139a92582e55ae8a8 Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Mon, 29 May 2017 13:57:24 +0200 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- .../devicetree/bindings/net/qca,qca7000.txt | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/Documentation/devicetree/bindings/net/qca,qca7000.txt b/Documentation/devicetree/bindings/net/qca,qca7000.txt index a37f65678399..6d9efb2eb9a5 100644 --- 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>; + }; +}; -- 2.25.1