kernel: backport of changes & helpers

This code is required for upcoming NVMEM changes.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 32 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch b/target/linux/generic/backport-5.15/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch
new file mode 100644
index 0000000000..4cf11ca34b
--- /dev/null
+++ b/target/linux/generic/backport-5.15/827-v6.3-0002-of-property-make-.-cells-optional-for-simple-props.patch
@@ -0,0 +1,32 @@
+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
+@@ -1227,8 +1227,8 @@ 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;