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| author | Steffen Trumtrar <s.trumtrar@pengutronix.de> | 2018-12-14 10:27:19 +0100 |
|---|---|---|
| committer | Roland Hieber <rhi@pengutronix.de> | 2019-02-07 12:50:56 +0100 |
| commit | af85ab844b1dfdbf4276a57384ef5594266db0cd (patch) | |
| tree | f779199cf513a20c399e9a7c80ee837db5591855 | |
| parent | 5588a6c32d54bc4a1ef0b9f72807c46dd00bc20e (diff) | |
| download | dt-utils-af85ab844b1dfdbf4276a57384ef5594266db0cd.tar.gz dt-utils-af85ab844b1dfdbf4276a57384ef5594266db0cd.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 8ae9978..bdfd409 100644 --- a/src/libdt.c +++ b/src/libdt.c @@ -2417,6 +2417,18 @@ 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. |