Bug#931707: linux: HW_RANDOM_OMAP disabled for arm64 --> please enable

From	Riku Voipio <riku.voipio@linaro.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#931707: linux: HW_RANDOM_OMAP disabled for arm64 --> please enable
Date	2019-08-07 16:00 +0200
Message-ID	<ysuDT-dS-1@gated-at.bofh.it> (permalink)
References	<yhXJf-3tv-1@gated-at.bofh.it> <yrz2V-6f6-1@gated-at.bofh.it> <yhXJf-3tv-1@gated-at.bofh.it> <yrz2V-6f6-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On Mon, 5 Aug 2019 at 03:21, Ben Hutchings <ben@decadent.org.uk> wrote:
>
> On Tue, 2019-07-09 at 12:43 +0000, Josua Mayer wrote:
> > Source: linux
> > Severity: normal
> >
> > Dear Maintainer,
> >
> > While testing Debian 10 on a Marvell 8040 SoC I found that the rng and SSH were
> > coming up extremely slow, taking over a minute to start.
> >
> > This is caused by somebody disabling the rng driver for arm64 kernels a long time ago:
> > linux (4.14.13-1) unstable; urgency=medium
> > ...
> >   [ Riku Voipio ]
> >   * [arm64] disable CONFIG_HW_RANDOM_OMAP until the IRQ storm bug is fixed
> >
> > What is this IRQ storm bug? Has it been fixed? Can we re-enable this driver?
>
> Riku, what do you think?  I see that the MacchiatoBin has an Armada 8K
> SoC, and there was an upstream commit in February 2018 that could be a
> relevant fix:
>
> commit b166be0044913a4ce03564e7c81f172025d78867
> Author: Gregory CLEMENT <gregory.clement@bootlin.com>
> Date:   Wed Feb 28 15:27:23 2018 +0100
>
>     hwrng: omap - Fix clock resource by adding a register clock
>
> Ben.

I think the problem was rather in the tianocore firmware than device
tree - but it might be the more accurate device tree fixes it. We can
enable it again, and then re-open the bug dialog with upstream if the
bug is still there.

Riku

> --
> Ben Hutchings
> Beware of programmers who carry screwdrivers. - Leonard Brandwein
>
>

Thread

Bug#931707: linux: HW_RANDOM_OMAP disabled for arm64 --> please enable Josua Mayer <josua.mayer97@gmail.com> - 2019-07-09 14:50 +0200
  Bug#931707: linux: HW_RANDOM_OMAP disabled for arm64 --> please enable Ben Hutchings <ben@decadent.org.uk> - 2019-08-05 02:30 +0200
    Bug#931707: linux: HW_RANDOM_OMAP disabled for arm64 --> please enable Riku Voipio <riku.voipio@linaro.org> - 2019-08-07 16:00 +0200
  Bug#931707: marked as done (linux: HW_RANDOM_OMAP disabled for  arm64 --> please enable) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-08-19 07:40 +0200

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