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| author | Simon Glass <sjg@chromium.org> | 2015-06-23 15:38:29 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-21 17:39:21 -0600 |
| commit | fa78e0a37173211d75e9606257bc028f066962cf (patch) | |
| tree | 51df2d7c98c352953586bbb29885177e08bb80dc /dts | |
| parent | 1043d0a0296a8580fd497a2eb1f411eb07ba98c1 (diff) | |
dm: Reduce SPL device tree size
The SPL device tree size must be minimised to save memory. Only include
properties that are needed by SPL - this is determined by the presence
of the "u-boot,dm-pre-reloc" property. Also remove a predefined list of
unused properties from the nodes that remain.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'dts')
| -rw-r--r-- | dts/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/dts/Kconfig b/dts/Kconfig index 957f5c7ffa..09cfefbd35 100644 --- a/dts/Kconfig +++ b/dts/Kconfig @@ -56,4 +56,16 @@ config DEFAULT_DEVICE_TREE It can be overridden from the command line: $ make DEVICE_TREE=<device-tree-name> +config OF_SPL_REMOVE_PROPS + string "List of device tree properties to drop for SPL" + depends on OF_CONTROL && SPL + default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent" + help + Since SPL normally runs in a reduced memory space, the device tree + is cut down to only what is needed to load and start U-Boot. Only + nodes marked with the property "u-boot,dm-pre-reloc" will be + included. In addition, some properties are not used by U-Boot and + can be discarded. This option defines the list of properties to + discard. + endmenu |