soundwire: mipi-disco: add comment on DP0-supported property

The DisCo for SoundWire 2.0 spec adds support for a new property, but
it's not very helpful. Add a comment to explain that it's
intentionally ignored.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-13-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/mipi_disco.c b/drivers/soundwire/mipi_disco.c
index 6feba5631eae8212aeb3eaafe9607d7a0a863c49..d6eb63bf125253b12708d71df53c1b3b91be2a72 100644 (file)
--- a/drivers/soundwire/mipi_disco.c
+++ b/drivers/soundwire/mipi_disco.c
@@ -398,7 +398,11 @@ int sdw_slave_read_prop(struct sdw_slave *slave)
        device_property_read_u32(dev, "mipi-sdw-sink-port-list",
                                 &prop->sink_ports);
 
-       /* Read dp0 properties */
+       /*
+        * Read dp0 properties - we don't rely on the 'mipi-sdw-dp-0-supported'
+        * property since the 'mipi-sdw-dp0-subproperties' property is logically
+        * equivalent.
+        */
        port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");
        if (!port) {
                dev_dbg(dev, "DP0 node not found!!\n");