Add a Kconfig option to enable this feature.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v3: None
Changes in v2: None
dts/Kconfig | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/dts/Kconfig b/dts/Kconfig
index c56c129..4b7d8b1 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
--
2.8.0.rc3.226.g39d4020
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