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| author | Simon Glass <sjg@chromium.org> | 2021-03-15 17:25:36 +1300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-03-26 17:03:09 +1300 |
| commit | ab933d802643ca51d276f0f449921a047126f8a1 (patch) | |
| tree | d984baab5d4daa7057bdfc281cb693db6468500d /dts | |
| parent | 95a5825f3134ff47f1e0cf37b4014b5c2e2027b5 (diff) | |
| download | u-boot-ab933d802643ca51d276f0f449921a047126f8a1.tar.gz u-boot-ab933d802643ca51d276f0f449921a047126f8a1.tar.xz u-boot-ab933d802643ca51d276f0f449921a047126f8a1.zip | |
dm: core: Create a struct for device runtime info
At present when driver model needs to change a device it simply updates
the struct udevice structure. But with of-platdata-inst most of the fields
are not modified at runtime. In fact, typically only the flags need to
change.
For systems running SPL from read-only memory it is convenient to separate
out the runtime information, so that the devices don't need to be copied
before being used.
Create a new udevice_rt table, similar to the existing driver_rt. For now
it just holds the flags, although they are not used in this patch.
Add a new Kconfig for the driver_rt data, since this is not needed when
of-platdata-inst is used.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'dts')
| -rw-r--r-- | dts/Kconfig | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/dts/Kconfig b/dts/Kconfig index e6bbdc596b..99ce75e1a2 100644 --- a/dts/Kconfig +++ b/dts/Kconfig @@ -338,6 +338,7 @@ config SPL_OF_PLATDATA bool "Generate platform data for use in SPL" depends on SPL_OF_CONTROL select DTOC + select SPL_OF_PLATDATA_DRIVER_RT if !SPL_OF_PLATDATA_INST help For very constrained SPL environments the overhead of decoding device tree nodes and converting their contents into platform data @@ -391,12 +392,22 @@ config SPL_OF_PLATDATA_RT struct udevice (at present just the flags) into a separate struct, which is allocated at runtime. +config SPL_OF_PLATDATA_DRIVER_RT + bool + help + Use a separate struct for driver runtime data. + + This enables the driver_rt information, used with of-platdata when + of-platdata-inst is not used. It allows finding devices by their + driver data. + endif config TPL_OF_PLATDATA bool "Generate platform data for use in TPL" depends on TPL_OF_CONTROL select DTOC + select TPL_OF_PLATDATA_DRIVER_RT if !TPL_OF_PLATDATA_INST help For very constrained SPL environments the overhead of decoding device tree nodes and converting their contents into platform data @@ -451,6 +462,15 @@ config TPL_OF_PLATDATA_RT struct udevice (at present just the flags) into a separate struct, which is allocated at runtime. +config TPL_OF_PLATDATA_DRIVER_RT + bool + help + Use a separate struct for driver runtime data. + + This enables the driver_rt information, used with of-platdata when + of-platdata-inst is not used. It allows finding devices by their + driver data. + endif endmenu |