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 ---
(no changes since v2)
Changes in v2: - Use separate OF_PLATDATA_DRIVER_RT Kconfigs for driver run-time data - Update the condition for dm_test_of_plat_dev()
drivers/core/root.c | 14 +++++++++++++- dts/Kconfig | 20 ++++++++++++++++++++ include/asm-generic/global_data.h | 16 ++++++++++++++-- include/dm/device.h | 15 +++++++++++++++ test/dm/of_platdata.c | 2 +- 5 files changed, 63 insertions(+), 4 deletions(-)
Applied to u-boot-dm/next, thanks!