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dm: core: implement phandle ofnode_options helper

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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>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Christian Marangi 2024-11-10 12:50:24 +01:00 • committed by Tom Rini
parent 2c19bd15ea
commit cab275c446
2 changed files with 30 additions and 0 deletions
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15
drivers/core/ofnode.c
View file

@ -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;

15
include/dm/ofnode.h
View file

@ -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
*