linux-kernel - [PATCH v2 3/3] of: property: Add in-ports/out-ports support to of_graph_get_port

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Message-Id: <20240207011803.2637531-4-saravanak@google.com>
Date: Tue,  6 Feb 2024 17:18:02 -0800
From: Saravana Kannan <saravanak@...gle.com>
To: Rob Herring <robh+dt@...nel.org>, Frank Rowand <frowand.list@...il.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Saravana Kannan <saravanak@...gle.com>
Cc: Xu Yang <xu.yang_2@....com>, kernel-team@...roid.com, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/3] of: property: Add in-ports/out-ports support to of_graph_get_port_parent()

Similar to the existing "ports" node name, coresight device tree bindings
have added "in-ports" and "out-ports" as standard node names for a
collection of ports.

Add support for these name to of_graph_get_port_parent() so that
remote-endpoint parsing can find the correct parent node for these
coresight ports too.

Signed-off-by: Saravana Kannan <saravanak@...gle.com>
---
 drivers/of/property.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 7bb2d8e290de..39a3ee1dfb58 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -763,7 +763,9 @@ struct device_node *of_graph_get_port_parent(struct device_node *node)
 	/* Walk 3 levels up only if there is 'ports' node. */
 	for (depth = 3; depth && node; depth--) {
 		node = of_get_next_parent(node);
-		if (depth == 2 && !of_node_name_eq(node, "ports"))
+		if (depth == 2 && !of_node_name_eq(node, "ports") &&
+		    !of_node_name_eq(node, "in-ports") &&
+		    !of_node_name_eq(node, "out-ports"))
 			break;
 	}
 	return node;
-- 
2.43.0.594.gd9cf4e227d-goog