Hi, On Thu, Feb 16, 2017 at 01:48:42PM +0100, Corentin Labbe wrote: > This patch adds documentation for Device-Tree bindings for the > Allwinner dwmac-sun8i driver. > > Signed-off-by: Corentin Labbe <clabbe.montjoie@xxxxxxxxx> > --- > .../devicetree/bindings/net/dwmac-sun8i.txt | 86 ++++++++++++++++++++++ > 1 file changed, 86 insertions(+) > create mode 100644 Documentation/devicetree/bindings/net/dwmac-sun8i.txt > > diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt > new file mode 100644 > index 0000000..ac806c6 > --- /dev/null > +++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt > @@ -0,0 +1,86 @@ > +* Allwinner sun8i GMAC ethernet controller > + > +This device is a platform glue layer for stmmac. > +Please see stmmac.txt for the other unchanged properties. > + > +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. > +- interrupts: interrupt for the device > +- interrupt-names: should be "macirq" > +- clocks: A phandle to the reference clock for this device > +- clock-names: should be "stmmaceth" > +- resets: A phandle to the reset control for this device > +- reset-names: should be "stmmaceth" > +- phy-mode: See ethernet.txt > +- phy-handle: See ethernet.txt > +- #address-cells: shall be 1 > +- #size-cells: shall be 0 > +- syscon: A phandle to the syscon of the SoC with one of the following > + compatible string: > + - allwinner,sun8i-h3-system-controller > + - allwinner,sun8i-a64-system-controller > + - allwinner,sun8i-a83t-system-controller > + > +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 > + > +Required properties for the system controller: > +- reg: address and length of the register for the device. > +- compatible: should be "syscon" and one of the following string: > + "allwinner,sun8i-h3-system-controller" > + "allwinner,sun8i-a64-system-controller" > + "allwinner,sun8i-a83t-system-controller" This should be in a separate binding document. What does it describe / represent? Thanks, Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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