Implement ofnode_options phandle helper to get an ofnode from a phandle
option in /options/u-boot.
This helper can be useful since new DT yaml usually require to link a
phandle of a node instead of referencing it by name or other indirect
way.
Signed-off-by: Christian Marangi <ansuels...@gmail.com>
---
drivers/core/ofnode.c | 15 +++++++++++++++
include/dm/ofnode.h | 15 +++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index dc6ac069311..c8161827d1c 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -1871,6 +1871,21 @@ const char *ofnode_options_read_str(const char
*prop_name)
return ofnode_read_string(uboot, prop_name);
}
+int ofnode_options_get_by_phandle(const char *prop_name, ofnode *nodep)
+{
+ ofnode uboot;
+
+ uboot = ofnode_path("/options/u-boot");
+ if (!ofnode_valid(uboot))
+ return -EINVAL;
+
+ *nodep = ofnode_parse_phandle(uboot, prop_name, 0);
+ if (!ofnode_valid(*nodep))
+ return -EINVAL;
+
+ return 0;
+}
+
int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset)
{
int ret;
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index eea6b13217c..890f0e6cf40 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -1720,6 +1720,21 @@ int ofnode_options_read_int(const char *prop_name, int
default_val);
*/
const char *ofnode_options_read_str(const char *prop_name);
+/**
+ * ofnode_options_get_by_phandle() - Get a ofnode from phandle from the U-Boot
options
+ *
+ * This reads a property from the /options/u-boot/ node of the devicetree.
+ *
+ * This only works with the control FDT.
+ *
+ * See dtschema/schemas/options/u-boot.yaml in dt-schema project for bindings
+ *
+ * @prop_name: property name to look up
+ * @nodep: pointer to ofnode where node is stored
+ * Return: 0, if found, or negative error if not
+ */
+int ofnode_options_get_by_phandle(const char *prop_name, ofnode *nodep);
+
/**
* ofnode_read_bootscript_address() - Read bootscr-address or
bootscr-ram-offset
*
--
2.45.2
