diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/chosen.txt | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/doc/device-tree-bindings/chosen.txt b/doc/device-tree-bindings/chosen.txt index 5625d210e8c..c96b8f71090 100644 --- a/doc/device-tree-bindings/chosen.txt +++ b/doc/device-tree-bindings/chosen.txt @@ -56,10 +56,20 @@ Each list element of the property should specify a device to be probed in the order they are listed: references (i.e. implicit paths), a full path or an alias is expected for each entry. +A special specifier "same-as-spl" can be used at any position in the +boot-order to direct U-Boot to insert the device the SPL was booted +from there. Whether this is indeed inserted or silently ignored (if +it is not supported on any given SoC/board or if the boot-device is +not available to continue booting from) is implementation-defined. +Note that if "same-as-spl" expands to an actual node for a given +board, the corresponding node may appear multiple times in the +boot-order (as there currently exists no mechanism to suppress +duplicates from the list). + Example ------- / { chosen { - u-boot,spl-boot-order = &sdmmc, "/sdhci@fe330000"; + u-boot,spl-boot-order = "same-as-spl", &sdmmc, "/sdhci@fe330000"; }; }; |