From 2aa4abc1bd516ac8d741160bbed082761c8dc163 Mon Sep 17 00:00:00 2001 From: Philipp Tomsich Date: Thu, 24 May 2018 17:15:51 +0200 Subject: [PATCH] spl: document 'chosen/u-boot, spl-boot-device' To let the full U-Boot know where it was booted from (i.e. which of the entries in /chosen/u-boot,spl-boot-order' contained a valid image), we define (and document) /chosen/u-boot,spl-boot-device as the property that could/should automatically be injected by SPL. This commit only contains a documentation change, which documents the new property and the intended usage. Signed-off-by: Philipp Tomsich Tested-by: Klaus Goger --- doc/device-tree-bindings/chosen.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/device-tree-bindings/chosen.txt b/doc/device-tree-bindings/chosen.txt index c96b8f7..da7b4e6 100644 --- a/doc/device-tree-bindings/chosen.txt +++ b/doc/device-tree-bindings/chosen.txt @@ -73,3 +73,13 @@ Example u-boot,spl-boot-order = "same-as-spl", &sdmmc, "/sdhci@fe330000"; }; }; + +u-boot,spl-boot-device property +------------------------------- + +This property is a companion-property to the u-boot,spl-boot-order and +will be injected automatically by the SPL stage to notify a later stage +of where said later stage was booted from. + +You should not define this property yourself in the device-tree, as it +may be overwritten without warning.