On Thu, Apr 19, 2018 at 10:16 AM, Phil Elwell <phil@xxxxxxxxxxxxxxx> 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 <phil@xxxxxxxxxxxxxxx>
> ---
> .../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 0000000..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+ */
> +&usb {
> + usb1@1 {
Same comments as in the dts file:
usb-port@1
> + compatible = "usb424,2514";
> + reg = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + usb1_1@1 {
usb-port@1
> + compatible = "usb424,2514";
> + reg = <1>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + ethernet: usbether@1 {
ethernet@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 <woojung.huh@xxxxxxxxxxxxx>
> M: Microchip Linux Driver Support <UNGLinuxDriver@xxxxxxxxxxxxx>
> L: netdev@xxxxxxxxxxxxxxx
> 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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