bus: ti-sysc: Remove open coded "ranges" parsing

"ranges" is a standard property and we have common helper functions for
parsing it, so let's use them.

Signed-off-by: Rob Herring <robh@kernel.org>
Message-Id: <20230201220002.246907-1-robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Author: robherring

drivers/bus/ti-sysc.c

@@ -648,43 +648,20 @@ static int sysc_init_resets(struct sysc *ddata)
 static int sysc_parse_and_check_child_range(struct sysc *ddata)
 {
 	struct device_node *np = ddata->dev->of_node;
-	const __be32 *ranges;
-	u32 nr_addr, nr_size;
-	int len, error;
-
-	ranges = of_get_property(np, "ranges", &len);
-	if (!ranges) {
-		dev_err(ddata->dev, "missing ranges for %pOF\n", np);
-
-		return -ENOENT;
-	}
-
-	len /= sizeof(*ranges);
-
-	if (len < 3) {
-		dev_err(ddata->dev, "incomplete ranges for %pOF\n", np);
-
-		return -EINVAL;
-	}
-
-	error = of_property_read_u32(np, "#address-cells", &nr_addr);
-	if (error)
-		return -ENOENT;
+	struct of_range_parser parser;
+	struct of_range range;
+	int error;
 
-	error = of_property_read_u32(np, "#size-cells", &nr_size);
+	error = of_range_parser_init(&parser, np);
 	if (error)
-		return -ENOENT;
-
-	if (nr_addr != 1 || nr_size != 1) {
-		dev_err(ddata->dev, "invalid ranges for %pOF\n", np);
+		return error;
 
-		return -EINVAL;
+	for_each_of_range(&parser, &range) {
+		ddata->module_pa = range.cpu_addr;
+		ddata->module_size = range.size;
+		break;
 	}
 
-	ranges++;
-	ddata->module_pa = of_translate_address(np, ranges++);
-	ddata->module_size = be32_to_cpup(ranges);
-
 	return 0;
 }