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| author | Simon Glass <sjg@chromium.org> | 2018-10-01 12:22:18 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-10-09 04:40:27 -0600 |
| commit | 06f94461a9f4769473651a34d7625f895ebe4996 (patch) | |
| tree | 5a56c0ee6ef198df774dbcb74febbc6e73d1e6af /doc | |
| parent | a15a7aa47be25580413a49f9e8f33ba02a46ede7 (diff) | |
| download | u-boot-06f94461a9f4769473651a34d7625f895ebe4996.tar.gz | |
fdt: Allow indicating a node is for U-Boot proper only
At present it is not possible to specify that a node should be used before
relocation (in U-Boot proper) without it also ending up in SPL and TPL
device trees. Add a new "u-boot,dm-pre-proper" boolean property for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/driver-model/README.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/driver-model/README.txt b/doc/driver-model/README.txt index 6085f927de..36541630a2 100644 --- a/doc/driver-model/README.txt +++ b/doc/driver-model/README.txt @@ -837,7 +837,9 @@ well, if device tree is enabled there. It is possible to limit this to specific relocation steps, by using the more specialized 'u-boot,dm-spl' and 'u-boot,dm-tpl' flags -in the devicetree. +in the device tree node. For U-Boot proper you can use 'u-boot,dm-pre-proper' +which means that it will be processed (and a driver bound) in U-Boot proper +prior to relocation, but will not be available in SPL or TPL. Then post relocation we throw that away and re-init driver model again. For drivers which require some sort of continuity between pre- and |