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authorSimon Glass <sjg@chromium.org>2021-03-15 17:25:15 +1300
committerSimon Glass <sjg@chromium.org>2021-03-22 19:23:28 +1300
commit1ef3af3b2717aba9db79879274ab5e1f1d7b2d25 (patch)
tree20db7bc4bce5c0286f955185de115d92e215a37f /dts
parent607f9bcb0d0af57c52bacf4d3aeb3a7d389ea206 (diff)
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dm: core: Allow dropping run-time binding of devices
With OF_PLATDATA_INST devices are bound at build time. We should not need binding of devices at runtime in most cases. However it is inflexible to absolutely prohibit it, so add an option to control this. Update the driver model core so that it does not bind devices. Update device_bind() to return an error if called. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'dts')
-rw-r--r--dts/Kconfig18
1 files changed, 18 insertions, 0 deletions
diff --git a/dts/Kconfig b/dts/Kconfig
index c39cc36..d289752 100644
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -371,6 +371,15 @@ config SPL_OF_PLATDATA_INST
Declare devices as udevice instances so that they do not need to be
bound when U-Boot starts. This can save time and code space.
+config SPL_OF_PLATDATA_NO_BIND
+ bool "Don't allow run-time binding of devices"
+ depends on SPL_OF_PLATDATA_INST
+ default y
+ help
+ This removes the ability to bind devices at run time, thus saving
+ some code space in U-Boot. This can be disabled if binding is needed,
+ at the code of some code size increase.
+
endif
config TPL_OF_PLATDATA
@@ -411,6 +420,15 @@ config TPL_OF_PLATDATA_INST
Declare devices as udevice instances so that they do not need to be
bound when U-Boot starts. This can save time and code space.
+config TPL_OF_PLATDATA_NO_BIND
+ bool "Don't allow run-time binding of devices"
+ depends on TPL_OF_PLATDATA_INST
+ default y
+ help
+ This removes the ability to bind devices at run time, thus saving
+ some code space in U-Boot. This can be disabled if binding is needed,
+ at the code of some code size increase.
+
endif
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