Re: [PATCH 2/4] net: stmmac: dwc-qos: Add FSD EQoS support

+static int dwc_eqos_setup_rxclock(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+
+	if (np && of_property_read_bool(np, "rx-clock-mux")) {
+		unsigned int reg, val;
+		struct regmap *syscon = syscon_regmap_lookup_by_phandle(np,
+			"rx-clock-mux");
+
+		if (IS_ERR(syscon)) {
+			dev_err(&pdev->dev, "couldn't get the rx-clock-mux syscon!\n");
+			return PTR_ERR(syscon);
+		}
+
+		if (of_property_read_u32_index(np, "rx-clock-mux", 1, &reg)) {
+			dev_err(&pdev->dev, "couldn't get the rx-clock-mux reg. offset!\n");
+			return -EINVAL;
+		}
+
+		if (of_property_read_u32_index(np, "rx-clock-mux", 2, &val)) {
+			dev_err(&pdev->dev, "couldn't get the rx-clock-mux reg. val!\n");
+			return -EINVAL;
+		}
+
+		regmap_write(syscon, reg, val);

This appears to be one of those binds which allows any magic value to
be placed into any register. That is not how DT should be used.

   Andrew