Re: [PATCH v3 3/3] dt-bindings: Document the DT bindings for lan78xx

[Andrew Lunn]

On Thu, Apr 19, 2018 at 03:32:05PM +0100, Phil Elwell wrote:
> The Microchip LAN78XX family of devices are Ethernet controllers with
> a USB interface. Despite being discoverable devices it can be useful to
> be able to configure them from Device Tree, particularly in low-cost
> applications without an EEPROM or programmed OTP.
> 
> Document the supported properties in a bindings file.
> 
> Signed-off-by: Phil Elwell 

Reviewed-by: Andrew Lunn 

Andrew
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[PATCH v3 3/3] dt-bindings: Document the DT bindings for lan78xx

[Phil Elwell]

The Microchip LAN78XX family of devices are Ethernet controllers with
a USB interface. Despite being discoverable devices it can be useful to
be able to configure them from Device Tree, particularly in low-cost
applications without an EEPROM or programmed OTP.

Document the supported properties in a bindings file.

Signed-off-by: Phil Elwell 
---
 .../devicetree/bindings/net/microchip,lan78xx.txt  | 54 ++
 MAINTAINERS|  1 +
 2 files changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/microchip,lan78xx.txt

diff --git a/Documentation/devicetree/bindings/net/microchip,lan78xx.txt 
b/Documentation/devicetree/bindings/net/microchip,lan78xx.txt
new file mode 100644
index 000..a5d701b
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/microchip,lan78xx.txt
@@ -0,0 +1,54 @@
+Microchip LAN78xx Gigabit Ethernet controller
+
+The LAN78XX devices are usually configured by programming their OTP or with
+an external EEPROM, but some platforms (e.g. Raspberry Pi 3 B+) have neither.
+The Device Tree properties, if present, override the OTP and EEPROM.
+
+Required properties:
+- compatible: Should be one of "usb424,7800", "usb424,7801" or "usb424,7850".
+
+Optional properties:
+- local-mac-address:   see ethernet.txt
+- mac-address: see ethernet.txt
+
+Optional properties of the embedded PHY:
+- microchip,led-modes: a 0..4 element vector, with each element configuring
+  the operating mode of an LED. Omitted LEDs are turned off. Allowed values
+  are defined in "include/dt-bindings/net/microchip-lan78xx.h".
+
+Example:
+
+/* Based on the configuration for a Raspberry Pi 3 B+ */
+ {
+   usb1@1 {
+   compatible = "usb424,2514";
+   reg = <1>;
+   #address-cells = <1>;
+   #size-cells = <0>;
+
+   usb1_1@1 {
+   compatible = "usb424,2514";
+   reg = <1>;
+   #address-cells = <1>;
+   #size-cells = <0>;
+
+   ethernet: usbether@1 {
+   compatible = "usb424,7800";
+   reg = <1>;
+   local-mac-address = [ 00 11 22 33 44 55 ];
+
+   mdio {
+   #address-cells = <0x1>;
+   #size-cells = <0x0>;
+   eth_phy: ethernet-phy@1 {
+   reg = <1>;
+   microchip,led-modes = <
+   
LAN78XX_LINK_1000_ACTIVITY
+   
LAN78XX_LINK_10_100_ACTIVITY
+   >;
+   };
+   };
+   };
+   };
+   };
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 23735d9..91cb961 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14572,6 +14572,7 @@ M:  Woojung Huh 
 M: Microchip Linux Driver Support 
 L: net...@vger.kernel.org
 S: Maintained
+F: Documentation/devicetree/bindings/net/microchip,lan78xx.txt
 F: drivers/net/usb/lan78xx.*
 F: include/dt-bindings/net/microchip-lan78xx.h
 
-- 
2.7.4

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