[PATCH 2/2] net: stmmac: meson: document device tree bindings

[Beniamino Galvani]

Add the device tree bindings documentation for the Amlogic Meson
variant of the Synopsys DesignWare MAC.

Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx>
---
 .../devicetree/bindings/net/meson-dwmac.txt        | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/meson-dwmac.txt

diff --git a/Documentation/devicetree/bindings/net/meson-dwmac.txt b/Documentation/devicetree/bindings/net/meson-dwmac.txt
new file mode 100644
index 0000000..ec633d7
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/meson-dwmac.txt
@@ -0,0 +1,25 @@
+* Amlogic Meson DWMAC Ethernet controller
+
+The device inherits all the properties of the dwmac/stmmac devices
+described in the file net/stmmac.txt with the following changes.
+
+Required properties:
+
+- compatible: should be "amlogic,meson6-dwmac" along with "snps,dwmac"
+	      and any applicable more detailed version number
+	      described in net/stmmac.txt
+
+- reg: should contain a register range for the dwmac controller and
+       another one for the Amlogic specific configuration
+
+Example:
+
+	ethmac: ethernet@c9410000 {
+		compatible = "amlogic,meson6-dwmac", "snps,dwmac";
+		reg = <0xc9410000 0x10000
+		       0xc1108108 0x4>;
+		interrupts = <0 8 1>;
+		interrupt-names = "macirq";
+		clocks = <&clk81>;
+		clock-names = "stmmaceth";
+	}
-- 
1.9.1

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