On Mon, 24 Apr 2023 15:01:35 -0600 Simon Glass <s...@chromium.org> wrote:
> Hi Hugo, > > On Mon, 24 Apr 2023 at 14:53, Hugo Villeneuve <h...@hugovil.com> wrote: > > > > Hi, > > according to this document: > > > > doc/develop/driver-model/fdt-fixup.rst > > > > it is suggested that boards implement the board_fix_fdt() function to tweak > > the device tree. I am trying to do just that, but unfortunately I cannot > > because the following source file already has an implementation of > > board_fix_fdt(): > > > > arch/arm/mach-imx/imx8m/soc.c > > > > For all boards using a imx8m CPU, how can we implement board_fix_fdt()? > > If you enable CONFIG_EVENT you can use EVT_FT_FIXUP to add as many > fixup functions as you need. > > Migration to use that mechanism everywhere hasn't really started, but > I think it would be useful. Hi Simon, to be more precise, I need to modify the FDT used by U-Boot to tweak some ethernet PHY properties before initializing the ethernet controller. I do _not_ need to fix the FDT before booting in the OS. With that in mind, do you still think using CONFIG_EVENT is the way to go? I am not sure from my reading of the source code because it seems that fixup events are called just before booting into the OS. Thank you, Hugo.
