net: dsa: Add DT bindings for Vitesse VSC73xx switches

This adds the device tree bindings for the Vitesse VSC73xx
switches. We also add the vendor name for Vitesse.

Cc: devicetree@vger.kernel.org
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.txt b/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.txt
new file mode 100644 (file)
index 0000000..ed4710c
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.txt
@@ -0,0 +1,81 @@
+Vitesse VSC73xx Switches
+========================
+
+This defines device tree bindings for the Vitesse VSC73xx switch chips.
+The Vitesse company has been acquired by Microsemi and Microsemi in turn
+acquired by Microchip but retains this vendor branding.
+
+The currently supported switch chips are:
+Vitesse VSC7385 SparX-G5 5+1-port Integrated Gigabit Ethernet Switch
+Vitesse VSC7388 SparX-G8 8-port Integrated Gigabit Ethernet Switch
+Vitesse VSC7395 SparX-G5e 5+1-port Integrated Gigabit Ethernet Switch
+Vitesse VSC7398 SparX-G8e 8-port Integrated Gigabit Ethernet Switch
+
+The device tree node is an SPI device so it must reside inside a SPI bus
+device tree node, see spi/spi-bus.txt
+
+Required properties:
+
+- compatible: must be exactly one of:
+       "vitesse,vsc7385"
+       "vitesse,vsc7388"
+       "vitesse,vsc7395"
+       "vitesse,vsc7398"
+- gpio-controller: indicates that this switch is also a GPIO controller,
+  see gpio/gpio.txt
+- #gpio-cells: this must be set to <2> and indicates that we are a twocell
+  GPIO controller, see gpio/gpio.txt
+
+Optional properties:
+
+- reset-gpios: a handle to a GPIO line that can issue reset of the chip.
+  It should be tagged as active low.
+
+Required subnodes:
+
+See net/dsa/dsa.txt for a list of additional required and optional properties
+and subnodes of DSA switches.
+
+Examples:
+
+switch@0 {
+       compatible = "vitesse,vsc7395";
+       reg = <0>;
+       /* Specified for 2.5 MHz or below */
+       spi-max-frequency = <2500000>;
+       gpio-controller;
+       #gpio-cells = <2>;
+
+       ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               port@0 {
+                       reg = <0>;
+                       label = "lan1";
+               };
+               port@1 {
+                       reg = <1>;
+                       label = "lan2";
+               };
+               port@2 {
+                       reg = <2>;
+                       label = "lan3";
+               };
+               port@3 {
+                       reg = <3>;
+                       label = "lan4";
+               };
+               vsc: port@6 {
+                       reg = <6>;
+                       label = "cpu";
+                       ethernet = <&gmac1>;
+                       phy-mode = "rgmii";
+                       fixed-link {
+                               speed = <1000>;
+                               full-duplex;
+                               pause;
+                       };
+               };
+       };
+};

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 7cad066191eeb8e6c9711cb81fd50283362fcf4d..3e5398f87eac443b8d6c544c85b8691911f37bd1 100644 (file)
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -395,6 +395,7 @@ v3  V3 Semiconductor
 variscite      Variscite Ltd.
 via    VIA Technologies, Inc.
 virtio Virtual I/O Device Specification, developed by the OASIS consortium
+vitesse        Vitesse Semiconductor Corporation
 vivante        Vivante Corporation
 vocore VoCore Studio
 voipac Voipac Technologies s.r.o.