STMicroelectronics SoC DWMAC glue layer controller This file documents differences between the core properties in Documentation/devicetree/bindings/net/stmmac.txt and what is needed on STi platforms to program the stmmac glue logic. The device node has following properties. Required properties: - compatible : Can be "st,stih415-dwmac", "st,stih416-dwmac", "st,stih407-dwmac", "st,stid127-dwmac". - st,syscon : Should be phandle/offset pair. The phandle to the syscon node which encompases the glue register, and the offset of the control register. - st,gmac_en: this is to enable the gmac into a dedicated sysctl control register available on STiH407 SoC. - pinctrl-0: pin-control for all the MII mode supported. Optional properties: - resets : phandle pointing to the system reset controller with correct reset line index for ethernet reset. - st,ext-phyclk: valid only for RMII where PHY can generate 50MHz clock or MAC can generate it. - st,tx-retime-src: This specifies which clk is wired up to the mac for retimeing tx lines. This is totally board dependent and can take one of the posssible values from "txclk", "clk_125" or "clkgen". If not passed, the internal clock will be used by default. - sti-ethclk: this is the phy clock. - sti-clkconf: this is an extra sysconfig register, available in new SoCs, to program the clk retiming. - st,gmac_en: to enable the GMAC, this only is present in some SoCs; e.g. STiH407. Example: ethernet0: dwmac@9630000 { device_type = "network"; status = "disabled"; compatible = "st,stih407-dwmac", "snps,dwmac", "snps,dwmac-3.710"; reg = <0x9630000 0x8000>; reg-names = "stmmaceth"; st,syscon = <&syscfg_sbc_reg 0x80>; st,gmac_en; resets = <&softreset STIH407_ETH1_SOFTRESET>; reset-names = "stmmaceth"; interrupts = , , ; interrupt-names = "macirq", "eth_wake_irq", "eth_lpi"; snps,pbl = <32>; snps,mixed-burst; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_rgmii1>; clock-names = "stmmaceth", "sti-ethclk"; clocks = <&CLK_S_C0_FLEXGEN CLK_EXT2F_A9>, <&CLK_S_C0_FLEXGEN CLK_ETH_PHY>; };