linux-kernel - [PATCH RFC v4 07/10] dt-bindings: net: add binding for QCA7000 UART

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Message-Id: <1490621848-24828-8-git-send-email-stefan.wahren@i2se.com>
Date:   Mon, 27 Mar 2017 15:37:25 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Sebastian Reichel <sre@...nel.org>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: [PATCH RFC v4 07/10] dt-bindings: net: add binding for QCA7000 UART

This is the serdev binding for the QCA7000 UART driver (Ethernet over UART).

Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>
---

According to this binding are still some questions:

Where should be the optional hardware flow control defined (at master or slave side)?

Is it okay to have two bindings (qca-qca7000-spi and qca-qca7000-uart) or should they be merged?


 .../devicetree/bindings/net/qca-qca7000-uart.txt   | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/qca-qca7000-uart.txt

diff --git a/Documentation/devicetree/bindings/net/qca-qca7000-uart.txt b/Documentation/devicetree/bindings/net/qca-qca7000-uart.txt
new file mode 100644
index 0000000..f2e0450
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/qca-qca7000-uart.txt
@@ -0,0 +1,31 @@
+* Qualcomm QCA7000 (Ethernet over UART protocol)
+
+Note: This binding applies in case the QCA7000 is configured as a
+UART slave device. It is possible to preconfigure the UART settings
+of the QCA7000 firmware, which can't be changed during runtime.
+
+Required properties:
+- compatible        : Should be "qca,qca7000-uart"
+
+Optional properties:
+- local-mac-address : 6 bytes, Specifies MAC address
+- current-speed     : Specifies the serial device speed in
+		      bits per second (default = 115200), which is
+		      predefined by the QCA7000 firmware configuration
+
+Example:
+
+/* Freescale i.MX28 UART */
+auart0: serial@...6a000 {
+	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-uart";
+		local-mac-address = [ A0 B0 C0 D0 E0 F0 ];
+		current-speed = <38400>;
+	};
+};
-- 
2.1.4