diff options
| author | Steffen Trumtrar <s.trumtrar@pengutronix.de> | 2018-12-14 10:27:19 +0100 |
|---|---|---|
| committer | Enrico Jorns <ejo@pengutronix.de> | 2019-10-21 11:06:38 +0200 |
| commit | 28ac0503b161bc99108580c4996210f7bec498d7 (patch) | |
| tree | a646b616988ae8e2fac73a4152ca1f238f15a974 | |
| parent | 93aacefb15de520e14a7a6972577c94d36b44933 (diff) | |
| download | dt-utils-28ac0503b161bc99108580c4996210f7bec498d7.tar.gz dt-utils-28ac0503b161bc99108580c4996210f7bec498d7.tar.xz | |
libdt: support finding devices by partuuid
This allows specifying partitions in devicetree that are actually not
described in the devicetree to allow referencing them:
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
state_part: state {
partuuid = "21367da7-c51f-499f-9aad-e1f366992365";
};
};
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Enrico Jorns <ejo@pengutronix.de>
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
| -rw-r--r-- | src/libdt.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/libdt.c b/src/libdt.c index 4638678..b52f80c 100644 --- a/src/libdt.c +++ b/src/libdt.c @@ -2416,6 +2416,18 @@ int of_get_devicepath(struct device_node *partition_node, char **devpath, off_t */ node = partition_node->parent; + if (of_device_is_compatible(node, "fixed-partitions")) { + const char *uuid; + + /* when partuuid is specified short-circuit the search for the cdev */ + ret = of_property_read_string(partition_node, "partuuid", &uuid); + if (!ret) { + *devpath = basprintf("/dev/disk/by-partuuid/%s", uuid); + + return 0; + } + } + /* * Respect flash "partitions" subnode. Use parent of parent in this * case. |