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 : "st,stih407-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
possible 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.
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