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Message-ID: <20241003070650.62787-13-yung-chuan.liao@linux.intel.com>
Date: Thu,  3 Oct 2024 15:06:48 +0800
From: Bard Liao <yung-chuan.liao@...ux.intel.com>
To: linux-sound@...r.kernel.org,
	vkoul@...nel.org
Cc: vinod.koul@...aro.org,
	linux-kernel@...r.kernel.org,
	pierre-louis.bossart@...ux.dev,
	bard.liao@...el.com
Subject: [PATCH v2 RESEND 12/14] soundwire: mipi-disco: add comment on DP0-supported property

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

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@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/mipi_disco.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soundwire/mipi_disco.c b/drivers/soundwire/mipi_disco.c
index 6feba5631eae..d6eb63bf1252 100644
--- 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");
-- 
2.43.0


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