diff options
| author | Simon Glass | 2016-07-04 11:58:06 -0600 |
|---|---|---|
| committer | Simon Glass | 2016-07-14 20:40:24 -0600 |
| commit | 2789ddb9d5bc6acd1f7a2822fed08cd7cf2a965e (patch) | |
| tree | e3381caaaa2c89eaa6b3ba425a15c49fd5833d78 /dts | |
| parent | 7a53a54073e663d79ea0e08818e98f14fde5685a (diff) | |
dm: Add an option to enable the of-platdata feature
Add a Kconfig option to enable this feature.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'dts')
| -rw-r--r-- | dts/Kconfig | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/dts/Kconfig b/dts/Kconfig index c56c1299c09..4b7d8b15cc0 100644 --- a/dts/Kconfig +++ b/dts/Kconfig @@ -85,4 +85,25 @@ config OF_SPL_REMOVE_PROPS can be discarded. This option defines the list of properties to discard. +config SPL_OF_PLATDATA + bool "Generate platform data for use in SPL" + depends on SPL_OF_CONTROL + help + For very constrained SPL environments the overhead of decoding + device tree nodes and converting their contents into platform data + is too large. This overhead includes libfdt code as well as the + device tree contents itself. The latter is fairly compact, but the + former can add 3KB or more to a Thumb 2 Image. + + This option enables generation of platform data from the device + tree as C code. This code creates devices using U_BOOT_DEVICE() + declarations. The benefit is that it allows driver code to access + the platform data directly in C structures, avoidin the libfdt + overhead. + + This option works by generating C structure declarations for each + compatible string, then adding platform data and U_BOOT_DEVICE + declarations for each node. See README.platdata for more + information. + endmenu |