dm driver probe and dm question

[Tim Harvey]

On Fri, Feb 25, 2022 at 11:31 PM Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> On 2/26/22 02:51, Tim Harvey wrote:
> > Greetings,
> >
> > I've got an octeontx board which uses driver model
> > (CONFIG_DM/CONFIG_DM_I2C) but I find that the 'i2c_octeon' driver does
> > not probe automatically on boot until I do something like an 'i2c dev
> > 0 && i2c probe'.
> >
> > What would cause the i2c_octeon driver to not automatically probe?
>
> It is the general design of U-Boot's driver model to use late probing.
> This reduces the boot time.
>
> Cf.
> https://u-boot.readthedocs.io/en/latest/develop/driver-model/design.html#driver-lifecycle
>

Heinrich,

Thanks for the explanation. Is there any way to make a dm driver force
its probe in the case of being vital for board startup? How does this
work for UCLASS_PMIC devices that are vital to board operation?

Best regards,

Tim