From: Sebastian Reichel <sre@kernel.org>
To: Robert Nelson <robertcnelson@gmail.com>
Cc: "Tony Lindgren" <tony@atomide.com>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"Pavel Machek" <pavel@ucw.cz>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Pali Rohár" <pali.rohar@gmail.com>
Subject: Re: ARM errata 430973 on multi platform kernels (was: OMAP3-N900: Add microphone bias voltages)
Date: Sun, 5 Apr 2015 15:00:45 +0200 [thread overview]
Message-ID: <20150405130045.GB9186@earth> (raw)
In-Reply-To: <CAOCHtYjCtmJNrkD0x78bm9b7hNvTKsZD2C2m5N=nR7p73R4zcg@mail.gmail.com>
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On Fri, Apr 03, 2015 at 02:21:48PM -0500, Robert Nelson wrote:
> >> And yes, for armhf userland one gets random oopses at least on the
> >> Nokia N900. AFAIK this is not true for all ARMv7 processors
> >> (especially non omaps), though.
> >>
> >> > http://www.spinics.net/lists/linux-omap/msg108511.html
> >> >
> >> > See also 5c86c5339c56 ("ARM: omap2plus_defconfig: Enable ARM erratum
> >> > 430973 for omap3").
> >>
> >> For me the random oopses occur without this config flag and are
> >> fixed by it. The workaround is not very suitable for multi platform
> >> kernels, though, since its enabled also for unaffected platforms.
> >>
> >> As far as I can see the CONFIG_ARM_ERRATA_430973 flag is checked
> >> in proc-v7.S and in proc-v7-2level.S. I think the first file is
> >> irrelevant, since it can be fixed later (see workaround in
> >> nokia_n900_legacy_init in pdata-quirks.c).
> >
> > Yes so it seems, and the bootloaders should really set it. It's
> > also disabled for multiplatform builds.
>
> These are now done in u-boot as of: v2015.04-rc4
>
> http://git.denx.de/?p=u-boot.git;a=commit;h=c6f90e1418a84fe5fa463b38403bd1845cb6a59c
Seems like "include/configs/nokia_rx51.h" has been forgotten. Note,
that the kernel must still be able to enable the bit itself (in case
NOLO is used without u-boot).
-- Sebastian
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WARNING: multiple messages have this Message-ID (diff)
From: sre@kernel.org (Sebastian Reichel)
To: linux-arm-kernel@lists.infradead.org
Subject: ARM errata 430973 on multi platform kernels (was: OMAP3-N900: Add microphone bias voltages)
Date: Sun, 5 Apr 2015 15:00:45 +0200 [thread overview]
Message-ID: <20150405130045.GB9186@earth> (raw)
In-Reply-To: <CAOCHtYjCtmJNrkD0x78bm9b7hNvTKsZD2C2m5N=nR7p73R4zcg@mail.gmail.com>
On Fri, Apr 03, 2015 at 02:21:48PM -0500, Robert Nelson wrote:
> >> And yes, for armhf userland one gets random oopses at least on the
> >> Nokia N900. AFAIK this is not true for all ARMv7 processors
> >> (especially non omaps), though.
> >>
> >> > http://www.spinics.net/lists/linux-omap/msg108511.html
> >> >
> >> > See also 5c86c5339c56 ("ARM: omap2plus_defconfig: Enable ARM erratum
> >> > 430973 for omap3").
> >>
> >> For me the random oopses occur without this config flag and are
> >> fixed by it. The workaround is not very suitable for multi platform
> >> kernels, though, since its enabled also for unaffected platforms.
> >>
> >> As far as I can see the CONFIG_ARM_ERRATA_430973 flag is checked
> >> in proc-v7.S and in proc-v7-2level.S. I think the first file is
> >> irrelevant, since it can be fixed later (see workaround in
> >> nokia_n900_legacy_init in pdata-quirks.c).
> >
> > Yes so it seems, and the bootloaders should really set it. It's
> > also disabled for multiplatform builds.
>
> These are now done in u-boot as of: v2015.04-rc4
>
> http://git.denx.de/?p=u-boot.git;a=commit;h=c6f90e1418a84fe5fa463b38403bd1845cb6a59c
Seems like "include/configs/nokia_rx51.h" has been forgotten. Note,
that the kernel must still be able to enable the bit itself (in case
NOLO is used without u-boot).
-- Sebastian
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next prev parent reply other threads:[~2015-04-05 13:01 UTC|newest]
Thread overview: 123+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-01 19:07 [PATCH RESEND] ARM: dts: OMAP3-N900: Add microphone bias voltages Jarkko Nikula
2015-03-30 16:30 ` Jarkko Nikula
[not found] ` <55197A12.1050009-FVTvWyuFUl3QT0dZR+AlfA@public.gmane.org>
2015-03-30 16:42 ` Tony Lindgren
2015-03-30 17:45 ` Jarkko Nikula
[not found] ` <55198BA4.5010207-FVTvWyuFUl3QT0dZR+AlfA@public.gmane.org>
2015-03-30 17:50 ` Tony Lindgren
2015-03-31 12:32 ` Sebastian Reichel
2015-04-01 19:47 ` Tony Lindgren
2015-04-03 16:35 ` ARM errata 430973 on multi platform kernels (was: OMAP3-N900: Add microphone bias voltages) Sebastian Reichel
2015-04-03 18:39 ` Tony Lindgren
2015-04-03 18:39 ` Tony Lindgren
2015-04-03 19:21 ` Robert Nelson
2015-04-03 19:21 ` Robert Nelson
2015-04-05 13:00 ` Sebastian Reichel [this message]
2015-04-05 13:00 ` Sebastian Reichel
2015-04-05 13:26 ` Pali Rohár
2015-04-05 13:26 ` Pali Rohár
2015-04-05 13:45 ` Sebastian Reichel
2015-04-05 13:45 ` Sebastian Reichel
2015-04-05 13:52 ` Pali Rohár
2015-04-05 13:52 ` Pali Rohár
2015-04-06 17:38 ` Sebastian Reichel
2015-04-06 17:38 ` Sebastian Reichel
2015-04-03 20:42 ` Pavel Machek
2015-04-03 20:42 ` Pavel Machek
2015-04-03 22:08 ` ARM errata 430973 on multi platform kernels Ivaylo Dimitrov
2015-04-03 22:08 ` Ivaylo Dimitrov
2015-04-03 22:15 ` Tony Lindgren
2015-04-03 22:15 ` Tony Lindgren
2015-04-03 22:47 ` Ivaylo Dimitrov
2015-04-03 22:47 ` Ivaylo Dimitrov
2015-04-03 22:52 ` Tony Lindgren
2015-04-03 22:52 ` Tony Lindgren
2015-04-05 4:13 ` Matthijs van Duin
2015-04-05 4:13 ` Matthijs van Duin
2015-04-05 7:23 ` Ivaylo Dimitrov
2015-04-05 7:23 ` Ivaylo Dimitrov
2015-04-05 16:50 ` Matthijs van Duin
2015-04-05 16:50 ` Matthijs van Duin
2015-04-05 16:52 ` Matthijs van Duin
2015-04-05 16:52 ` Matthijs van Duin
2015-04-05 21:08 ` Ivaylo Dimitrov
2015-04-05 21:08 ` Ivaylo Dimitrov
2015-04-05 23:52 ` Matthijs van Duin
2015-04-05 23:52 ` Matthijs van Duin
2015-04-06 15:19 ` Tony Lindgren
2015-04-06 15:19 ` Tony Lindgren
2015-04-06 15:40 ` Tony Lindgren
2015-04-06 15:40 ` Tony Lindgren
2015-04-06 17:14 ` Ivaylo Dimitrov
2015-04-06 17:14 ` Ivaylo Dimitrov
2015-04-06 17:42 ` Tony Lindgren
2015-04-06 17:42 ` Tony Lindgren
2015-04-06 18:14 ` Matthijs van Duin
2015-04-06 18:14 ` Matthijs van Duin
2015-04-07 2:23 ` Tony Lindgren
2015-04-07 2:23 ` Tony Lindgren
2015-04-07 3:12 ` Sebastian Reichel
2015-04-07 3:12 ` Sebastian Reichel
2015-04-07 3:49 ` Matthijs van Duin
2015-04-07 3:49 ` Matthijs van Duin
2015-04-07 14:48 ` Tony Lindgren
2015-04-07 14:48 ` Tony Lindgren
2015-04-09 22:37 ` Grazvydas Ignotas
2015-04-09 22:37 ` Grazvydas Ignotas
2015-04-09 22:44 ` Tony Lindgren
2015-04-09 22:44 ` Tony Lindgren
2015-04-09 23:44 ` Nishanth Menon
2015-04-09 23:44 ` Nishanth Menon
2015-04-10 22:05 ` Grazvydas Ignotas
2015-04-10 22:05 ` Grazvydas Ignotas
2015-04-10 23:08 ` Tony Lindgren
2015-04-10 23:08 ` Tony Lindgren
2015-04-16 16:53 ` Matthijs van Duin
2015-04-16 16:53 ` Matthijs van Duin
2015-04-07 13:58 ` Russell King - ARM Linux
2015-04-07 13:58 ` Russell King - ARM Linux
2015-04-07 13:57 ` Russell King - ARM Linux
2015-04-07 13:57 ` Russell King - ARM Linux
2015-04-07 15:22 ` Tony Lindgren
2015-04-07 15:22 ` Tony Lindgren
2015-04-07 15:44 ` Tony Lindgren
2015-04-07 15:44 ` Tony Lindgren
2015-04-08 23:08 ` Russell King - ARM Linux
2015-04-08 23:08 ` Russell King - ARM Linux
2015-04-08 23:15 ` Tony Lindgren
2015-04-08 23:15 ` Tony Lindgren
2015-04-08 23:06 ` Russell King - ARM Linux
2015-04-08 23:06 ` Russell King - ARM Linux
2015-04-09 13:48 ` Russell King - ARM Linux
2015-04-09 13:48 ` Russell King - ARM Linux
2015-04-09 15:09 ` Tony Lindgren
2015-04-09 15:09 ` Tony Lindgren
2015-04-09 15:30 ` Russell King - ARM Linux
2015-04-09 15:30 ` Russell King - ARM Linux
2015-04-15 16:31 ` Sebastian Reichel
2015-04-15 16:31 ` Sebastian Reichel
2015-04-16 16:08 ` Tony Lindgren
2015-04-16 16:08 ` Tony Lindgren
2015-04-17 18:41 ` Sebastian Reichel
2015-04-17 18:41 ` Sebastian Reichel
2015-04-20 23:40 ` Tony Lindgren
2015-04-20 23:40 ` Tony Lindgren
2015-04-23 10:25 ` Russell King - ARM Linux
2015-04-23 10:25 ` Russell King - ARM Linux
2015-04-23 14:17 ` Tony Lindgren
2015-04-23 14:17 ` Tony Lindgren
2015-04-28 18:13 ` Russell King - ARM Linux
2015-04-28 18:13 ` Russell King - ARM Linux
2015-04-29 14:40 ` Tony Lindgren
2015-04-29 14:40 ` Tony Lindgren
2015-05-04 14:24 ` Tony Lindgren
2015-05-04 14:24 ` Tony Lindgren
2015-04-24 8:54 ` Matthijs van Duin
2015-04-24 8:54 ` Matthijs van Duin
2015-04-28 18:11 ` Russell King - ARM Linux
2015-04-28 18:11 ` Russell King - ARM Linux
2015-05-02 6:51 ` Matthijs van Duin
2015-05-02 6:51 ` Matthijs van Duin
2015-04-05 13:39 ` Sebastian Reichel
2015-04-05 13:39 ` Sebastian Reichel
2015-04-06 15:24 ` Tony Lindgren
2015-04-06 15:24 ` Tony Lindgren
2015-05-04 16:07 ` [PATCH RESEND] ARM: dts: OMAP3-N900: Add microphone bias voltages Tony Lindgren
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