Thanks for your kindly comments.
On Mon, 2018-10-29 at 13:27 +0100, Andrew Lunn wrote:

quoted

+static int mt2712_config_dt(struct mediatek_dwmac_plat_data *plat)
+{
+	u32 mac_timings[4];
+
+	plat->peri_regmap = syscon_regmap_lookup_by_compatible("mediatek,mt2712-pericfg");
+	if (IS_ERR(plat->peri_regmap)) {
+		dev_err(plat->dev, "Failed to get pericfg syscon\n");
+		return PTR_ERR(plat->peri_regmap);
+	}
+
+	if (!of_property_read_u32_array(plat->np, "mac-delay", mac_timings,
+					ARRAY_SIZE(mac_timings))) {
+		plat->mac_delay.tx_delay = mac_timings[0];
+		plat->mac_delay.rx_delay = mac_timings[1];
+		plat->mac_delay.tx_inv = mac_timings[2];
+		plat->mac_delay.rx_inv = mac_timings[3];
+	}
+
+	plat->fine_tune = of_property_read_bool(plat->np, "fine-tune");
+
+	plat->rmii_rxc = of_property_read_bool(plat->np, "rmii-rxc");

Please add document for these properties in the binding.

ok, I forgot these properties.

Ideally, you should reuse the binding that some of the other stmmac
glue layer uses. e.g. there is already allwinner,tx-delay-ps,
allwinner,rx-delay-ps.

take it, seems that tx-delay/rx-delay will be more readable than
mac-delay in dts. will be changed in next patch.

       Thanks
              Andrew