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 ansuelsmth@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 774b428c43f..3a96bf4f0c5 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 *