openwrt/target/linux/generic/backport-5.10/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch

From 4f4145c9fee8c7a445dbbbadceccce5391e6b287 Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Tue, 6 Dec 2022 21:07:22 +0100
Subject: [PATCH] of: property: make #.*-cells optional for simple props

Sometimes, future bindings for phandles will get additional arguments.
Thus the target node of the phandle will need a new #.*-cells property.
To be backwards compatible, this needs to be optional.

Prepare the DEFINE_SIMPLE_PROPS() to handle the cells name as optional.

Signed-off-by: Michael Walle <michael@walle.cc>
Tested-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/of/property.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -1267,8 +1267,8 @@ static struct device_node *parse_suffix_
 	if (strcmp_suffix(prop_name, suffix))
 		return NULL;
 
-	if (of_parse_phandle_with_args(np, prop_name, cells_name, index,
-				       &sup_args))
+	if (__of_parse_phandle_with_args(np, prop_name, cells_name, 0, index,
+					 &sup_args))
 		return NULL;
 
 	return sup_args.np;