LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: Guillaume Tucker <guillaume.tucker@collabora.com>
Cc: sboyd@kernel.org, heiko@sntech.de, knaerzche@gmail.com,
	linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
	"kernelci@groups.io" <kernelci@groups.io>,
	Collabora Kernel ML <kernel@collabora.com>,
	Chen-Yu Tsai <wens@csie.org>
Subject: Re: [PATCH] clk: composite: Also consider .determine_rate for rate + mux composites
Date: Mon, 1 Nov 2021 21:58:38 +0100	[thread overview]
Message-ID: <CAFBinCAEt9_EfLYWZEzTBK6iN97+Wacho7pNd2LYDPX3+goMzg@mail.gmail.com> (raw)
In-Reply-To: <04a58d50-634b-fa20-95b4-eb6831f77e85@collabora.com>

Hi Guillaume,

On Mon, Nov 1, 2021 at 9:19 PM Guillaume Tucker
<guillaume.tucker@collabora.com> wrote:
>
> Hi Martin,
>
> Please see the bisection report below about a boot failure on
> rk3328-rock64.
>
> Reports aren't automatically sent to the public while we're
> trialing new bisection features on kernelci.org but this one
> looks valid.
>
> Some more details can be found here:
>
>   https://linux.kernelci.org/test/case/id/617f11f5c157b666fb3358e6/
>
> Here's what appears to be the cause of the problem:
>
> [    0.033465] CPU: CPUs started in inconsistent modes
> [    0.033557] Unexpected kernel BRK exception at EL1
> [    0.034432] Internal error: BRK handler: f2000800 [#1] PREEMPT SMP
>
> There doesn't appear to be any other platform in KernelCI showing
> the same issue.
That's a strange error for the changes from my patch.
At first glance I don't see any relation to clk-composite code:
- the call trace doesn't have any references to CCF or rockchip clock drivers
- clk-rk3328.c uses drivers/clk/rockchip/clk-cpu.c to register the CPU
clock which does not use clk-composite

Chen-Yu has tested this patch (plus [0]) on RK3399 and didn't observe
any problems.
So maybe this is a RK3328 specific issue?
Anyways, I am interested in fixing this issue because reverting is
becoming more and more complex (since I think we're at eight commits
which would need to be reverted in total).

> Please let us know if you need help debugging the issue or if you
> have a fix to try.
Could you please try [0] which is the second patch in the series which
finally made it upstream.
This second patch is not in 5.15 because I believed that it's only
something to make the code in clk-composite.c more future-proof. It's
not a condition that I am aware of.

I don't have any Rockchip boards myself.
So I am thankful for any help I can get.


Best regards,
Martin


[0] https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/commit/?h=clk-next&id=6594988fd625ff0d9a8f90f1788e16185358a3e6

  reply	other threads:[~2021-11-01 20:58 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02 22:51 [PATCH v1 0/6] clk: switch dividers to .determine_rate Martin Blumenstingl
2021-07-02 22:51 ` [PATCH v1 1/6] clk: divider: Implement and wire up .determine_rate by default Martin Blumenstingl
2021-08-06  1:10   ` Stephen Boyd
2021-10-14  9:55   ` Alex Bee
2021-10-14 12:11     ` Martin Blumenstingl
2021-10-14 21:34       ` Martin Blumenstingl
2021-10-14 22:52         ` Stephen Boyd
2021-10-15 12:05           ` [PATCH] clk: composite: Also consider .determine_rate for rate + mux composites Martin Blumenstingl
2021-10-15 21:27             ` Stephen Boyd
2021-11-01 20:19             ` Guillaume Tucker
2021-11-01 20:58               ` Martin Blumenstingl [this message]
2021-11-01 21:59                 ` Robin Murphy
2021-11-01 22:11                   ` Robin Murphy
2021-11-01 22:41                     ` Alex Bee
2021-11-02  7:58                       ` Guillaume Tucker
2021-11-02 21:40                         ` LABBE Corentin
2021-10-15 19:14         ` [PATCH v1 1/6] clk: divider: Implement and wire up .determine_rate by default Alex Bee
2021-10-15 21:31           ` Stephen Boyd
2021-07-02 22:51 ` [PATCH v1 2/6] clk: imx: clk-divider-gate: Switch to clk_divider.determine_rate Martin Blumenstingl
2021-07-19 10:43   ` Abel Vesa
2021-07-29 11:30   ` Abel Vesa
2021-07-02 22:51 ` [PATCH v1 3/6] clk: bcm2835: " Martin Blumenstingl
2021-07-05  6:57   ` Marek Szyprowski
2021-08-06  1:10   ` Stephen Boyd
2021-07-02 22:51 ` [PATCH v1 4/6] clk: stm32f4: " Martin Blumenstingl
2021-08-06  1:10   ` Stephen Boyd
2021-07-02 22:51 ` [PATCH v1 5/6] clk: stm32h7: " Martin Blumenstingl
2021-08-06  1:10   ` Stephen Boyd
2021-07-02 22:51 ` [PATCH v1 6/6] clk: stm32mp1: " Martin Blumenstingl
2021-08-06  1:10   ` Stephen Boyd
2021-08-03 19:32 ` [PATCH v1 0/6] clk: switch dividers to .determine_rate Martin Blumenstingl
2021-08-03 20:16   ` Stephen Boyd

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAFBinCAEt9_EfLYWZEzTBK6iN97+Wacho7pNd2LYDPX3+goMzg@mail.gmail.com \
    --to=martin.blumenstingl@googlemail.com \
    --cc=guillaume.tucker@collabora.com \
    --cc=heiko@sntech.de \
    --cc=kernel@collabora.com \
    --cc=kernelci@groups.io \
    --cc=knaerzche@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-clk@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-rockchip@lists.infradead.org \
    --cc=sboyd@kernel.org \
    --cc=wens@csie.org \
    --subject='Re: [PATCH] clk: composite: Also consider .determine_rate for rate + mux composites' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).