Introduce documentation for a device tree binding for the Intel Platform
Controller Hub (PCH) GigaBit Ethernet (GBE) device. Although this is a
PCIe device & thus largely auto-detectable, this binding will be used to
provide the driver with the PHY reset GPIO.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
---
Changes in v5:
- Use standard gpio & ethernet node names in example.
- Remove bus number from example unit addresses.
Changes in v4: None
Changes in v3:
- New patch.
Changes in v2: None
Documentation/devicetree/bindings/net/pch_gbe.txt | 25 +++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/pch_gbe.txt
diff --git a/Documentation/devicetree/bindings/net/pch_gbe.txt b/Documentation/devicetree/bindings/net/pch_gbe.txt
new file mode 100644
index 000000000000..cff2687e6e75
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/pch_gbe.txt
@@ -0,0 +1,25 @@
+Intel Platform Controller Hub (PCH) GigaBit Ethernet (GBE)
+
+Required properties:
+- compatible: Should be the PCI vendor & device ID, eg. "pci8086,8802".
+- reg: Should be a PCI device number as specified by the PCI bus
+ binding to IEEE Std 1275-1994.
+- phy-reset-gpios: Should be a GPIO list containing a single GPIO that
+ resets the attached PHY when active.
+
+Example:
+
+ ethernet@0,1 {
+ compatible = "pci8086,8802";
+ reg = <0x00020100 0 0 0 0>;
+ phy-reset-gpios = <&eg20t_gpio 6
+ GPIO_ACTIVE_LOW>;
+ };
+
+ eg20t_gpio: gpio@0,2 {
+ compatible = "pci8086,8803";
+ reg = <0x00020200 0 0 0 0>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
--
2.16.1
--
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