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Diffstat (limited to 'drivers/of/Kconfig')
| -rw-r--r-- | drivers/of/Kconfig | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 24cf4465a8..7436fc2de1 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -50,3 +50,28 @@ config OF_BAREBOX_ENV_IN_FS help Allow the devie tree configuration of the barebox environment path to specify a file in filesystem, which will be mounted. + +config OF_OVERLAY + select OFTREE + bool "Devicetree overlays" + help + Overlays allow to patch the devicetree. Unlike Linux, Barebox does + not patch the live devicetree, but applies the overlays as fixup to + the devicetree. Furthermore, overlays cannot be removed after they + have been applied. + +config OF_OVERLAY_LIVE + depends on OF_OVERLAY + bool "Support devicetree overlays on live devicetree" + help + This option allows to use devicetree overlays with the live + devicetree. It is not required to apply overlays to any other + devicetree. + + This builds the build-in devicetree with __symbols__, which + significantly increases the size of the dtb file. + + Enable this option only if you actually need the live devicetree + while applying in the devicetree overlay. This is usually the case if + applying the overlay has other side effects than changing the + devicetree. |