dm: core: Add a way to obtain a string list

At present we support reading a string list a string at a time. Apart
from being inefficient, this makes it impossible to separate reading of
the devicetree into the of_to_plat() method where it belongs, since any
code which needs access to the string must read it from the devicetree.

Add a function which returns the string property as an array of pointers
to the strings, which is easily used by clients.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/core/read.c b/drivers/core/read.c
index 4307ca4579..31f9e78a06 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -205,6 +205,12 @@ int dev_read_string_count(const struct udevice *dev, const char *propname)
 	return ofnode_read_string_count(dev_ofnode(dev), propname);
 }
 
+int dev_read_string_list(const struct udevice *dev, const char *propname,
+			 const char ***listp)
+{
+	return ofnode_read_string_list(dev_ofnode(dev), propname, listp);
+}
+
 int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
 			       const char *cells_name, int cell_count,
 			       int index, struct ofnode_phandle_args *out_args)