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Diffstat (limited to 'doc/driver-model/README.txt')
| -rw-r--r-- | doc/driver-model/README.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/driver-model/README.txt b/doc/driver-model/README.txt index 07b120d512..532a771f68 100644 --- a/doc/driver-model/README.txt +++ b/doc/driver-model/README.txt @@ -849,6 +849,10 @@ 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. +To reduce the size of SPL and TPL, only the nodes with pre-relocation properties +('u-boot,dm-pre-reloc', 'u-boot,dm-spl' or 'u-boot,dm-tpl') are keept in their +device trees (see README.SPL for details); the remaining nodes are always bound. + Then post relocation we throw that away and re-init driver model again. For drivers which require some sort of continuity between pre- and post-relocation devices, we can provide access to the pre-relocation |