author | Simon Glass <sjg@chromium.org> | |
Mon, 15 Mar 2021 04:25:36 +0000 (17:25 +1300) | ||
committer | Simon Glass <sjg@chromium.org> | |
Fri, 26 Mar 2021 04:03:09 +0000 (17:03 +1300) | ||
commit | ab933d802643ca51d276f0f449921a047126f8a1 | |
tree | d984baab5d4daa7057bdfc281cb693db6468500d | tree | snapshot (tar.xz tar.gz zip) |
parent | 95a5825f3134ff47f1e0cf37b4014b5c2e2027b5 | commit | diff |
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>
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>