soundwire: mipi_disco: add support for clock-scales property

The DisCo for SoundWire 2.0 spec adds support for the
'mipi-sdw-supported-clock-scales' property, which is just a
rename. Add in a backwards-compatible manner.

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: plbossart

drivers/soundwire/mipi_disco.c

@@ -51,6 +51,7 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 {
 	struct sdw_master_prop *prop = &bus->prop;
 	struct fwnode_handle *link;
+	const char *scales_prop;
 	char name[32];
 	int nval;
 	int ret;
@@ -112,7 +113,12 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 		}
 	}
 
-	nval = fwnode_property_count_u32(link, "mipi-sdw-supported-clock-gears");
+	scales_prop = "mipi-sdw-supported-clock-scales";
+	nval = fwnode_property_count_u32(link, scales_prop);
+	if (nval == 0) {
+		scales_prop = "mipi-sdw-supported-clock-gears";
+		nval = fwnode_property_count_u32(link, scales_prop);
+	}
 	if (nval > 0) {
 		prop->num_clk_gears = nval;
 		prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
@@ -124,7 +130,7 @@ int sdw_master_read_prop(struct sdw_bus *bus)
 		}
 
 		ret = fwnode_property_read_u32_array(link,
-					       "mipi-sdw-supported-clock-gears",
+					       scales_prop,
 					       prop->clk_gears,
 					       prop->num_clk_gears);
 		if (ret < 0)