Re: Jetson-tk1 regulator and initramfs

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On Fri, Jun 26, 2020 at 2:57 PM Nicolas Chauvet <kwizart@xxxxxxxxx> wrote:
>
> HI,
>
> FYI, I've found an issue with the current kernel 5.6.x (maybe earlier)
> the as3722_regulator module isn't added by dracut in hostonly mode (it
> is added as all others regulators)
>
> I need to add this:
> cat >/etc/dracut.conf.d/jetson-tk1.conf<<EOF
> add_drivers+=" as3722-regulator "
> EOF
>
> This prevents the board to mount the rootfs in mmc or sda when the
> initramfs is in host-only mode.

So two questions:
1) when did this regress?
2) is it an issue with 5.7 (heading to f-32 RSN) or 5.8-rcX?

> I've reported the issue to dracut upstream at
> https://github.com/dracutdevs/dracut/issues/847

Why is this a dracut issue, it sounds like a module dep issue.

> Now I wonder if other boards are affected by such regulators tweak and
> if a common solution can be found ?

We already pull all the regulator driver into the generic initrd, and
regulator drivers should already be assessed by dracut when building
the initrd if the kernel deps are right so I suspect there's a
regression or some other change which has changed this, first step
will be to work out the last known good kernel and work it out from
there.

Peter
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