On Fri, Oct 07, 2016 at 10:25:50AM +0200, Corentin Labbe wrote:
> This patch adds documentation for Device-Tree bindings for the
> Allwinner sun8i-emac driver.
>
> Signed-off-by: Corentin Labbe <clabbe.montjoie@xxxxxxxxx>
> ---
> .../bindings/net/allwinner,sun8i-emac.txt | 70 ++++++++++++++++++++++
> 1 file changed, 70 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
>
> diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt b/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
> new file mode 100644
> index 0000000..92e4ef3b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
> @@ -0,0 +1,70 @@
> +* Allwinner sun8i EMAC ethernet controller
> +
> +Required properties:
> +- compatible: should be one of the following string:
> + "allwinner,sun8i-a83t-emac"
> + "allwinner,sun8i-h3-emac"
> + "allwinner,sun50i-a64-emac"
> +- reg: address and length of the register for the device.
> +- syscon: A phandle to the syscon of the SoC
> +- interrupts: interrupt for the device
> +- clocks: A phandle to the reference clock for this device
> +- clock-names: should be "ahb"
> +- resets: A phandle to the reset control for this device
> +- reset-names: should be "ahb"
> +- phy-mode: See ethernet.txt
> +- phy-handle: See ethernet.txt
> +- #address-cells: shall be 1
> +- #size-cells: shall be 0
> +
> +Optional properties:
> +- allwinner,tx-delay: TX clock delay chain value. Range value is 0-0x07. Default is 0)
> +- allwinner,rx-delay: RX clock delay chain value. Range value is 0-0x1F. Default is 0)
> +Both delay properties does not have units, there are arbitrary value.
> +The TX/RX clock delay chain settings are board specific and could be found
> +in vendor FEX files.
> +
> +Optional properties for "allwinner,sun8i-h3-emac":
> +- allwinner,leds-active-low: EPHY LEDs are active low
> +
> +Required child node of emac:
> +- mdio bus node: should be named mdio
> +
> +Required properties of the mdio node:
> +- #address-cells: shall be 1
> +- #size-cells: shall be 0
> +
> +The device node referenced by "phy" or "phy-handle" should be a child node
> +of the mdio node. See phy.txt for the generic PHY bindings.
> +
> +Required properties of the phy node with "allwinner,sun8i-h3-emac":
> +- clocks: an extra phandle to the reference clock for the EPHY
> +- resets: an extra phandle to the reset control for the EPHY
> +
> +Example:
> +
> +emac: ethernet@01c0b000 {
> + compatible = "allwinner,sun8i-h3-emac";
> + syscon = <&syscon>;
> + reg = <0x01c0b000 0x104>;
> + interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
> + resets = <&ccu RST_BUS_EMAC>;
> + reset-names = "ahb";
> + clocks = <&ccu CLK_BUS_EMAC>;
> + clock-names = "ahb";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + phy = <&int_mii_phy>;
> + phy-mode = "mii";
> + allwinner,leds-active-low;
> + mdio: mdio {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + int_mii_phy: ethernet-phy@1 {
> + reg = <1>;
> + clocks = <&ccu CLK_BUS_EPHY>;
> + resets = <&ccu RST_BUS_EPHY>;
That works for me, let's see how the DT maintainers feel about it.
Thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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