dt-bindings: net: Add Qualcomm ethqos binding

Qualcomm Ethernet ETHQOS device

This documents dwmmac based ethernet device which supports Gigabit

ethernet for version v2.3.0 onwards.

This device has following properties:

Required properties:

- compatible: Should be qcom,qcs404-ethqos"

- reg: Address and length of the register set for the device

- reg-names: Should contain register names "stmmaceth", "rgmii"

- clocks: Should contain phandle to clocks

- clock-names: Should contain clock names "stmmaceth", "pclk",

		"ptp_ref", "rgmii"

- interrupts: Should contain phandle to interrupts

- interrupt-names: Should contain interrupt names "macirq", "eth_lpi"

Rest of the properties are defined in stmmac.txt file in same directory

Example:

ethernet: ethernet@7a80000 {

	compatible = "qcom,qcs404-ethqos";

	reg = <0x07a80000 0x10000>,

		<0x07a96000 0x100>;

	reg-names = "stmmaceth", "rgmii";

	clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";

	clocks = <&gcc GCC_ETH_AXI_CLK>,

		<&gcc GCC_ETH_SLAVE_AHB_CLK>,

		<&gcc GCC_ETH_PTP_CLK>,

		<&gcc GCC_ETH_RGMII_CLK>;

	interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,

			<GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;

	interrupt-names = "macirq", "eth_lpi";

	snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;

	snps,reset-active-low;

	snps,txpbl = <8>;

	snps,rxpbl = <2>;

	snps,aal;

	snps,tso;

	phy-handle = <&phy1>;

	phy-mode = "rgmii";

	mdio {

		#address-cells = <0x1>;

		#size-cells = <0x0>;

		compatible = "snps,dwmac-mdio";

		phy1: phy@4 {

			device_type = "ethernet-phy";

			reg = <0x4>;

		};

	};

};