From: Stefan Wahren <wahrenst@gmx.net>
To: Florian Fainelli <f.fainelli@gmail.com>,
Eric Anholt <eric@anholt.net>, Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
boris.brezillon@bootlin.com
Cc: bcm-kernel-feedback-list@broadcom.com,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] Revert "ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware."
Date: Wed, 9 Oct 2019 23:33:10 +0200 [thread overview]
Message-ID: <077547f9-e0ec-29a6-6264-0281dac6b8c8@gmx.net> (raw)
In-Reply-To: <26e101ad-8b5b-edef-4437-778bc57ae81f@gmail.com>
Hi Florian,
Am 23.09.19 um 20:56 schrieb Florian Fainelli:
>
> On 9/8/2019 8:44 AM, Stefan Wahren wrote:
>> Since release of the new BCM2835 PM driver there has been several reports
>> of V3D probing issues. This is caused by timeouts during powering-up the
>> GRAFX PM domain:
>>
>> bcm2835-power: Timeout waiting for grafx power OK
>>
>> I was able to reproduce this reliable on my Raspberry Pi 3B+ after setting
>> force_turbo=1 in the firmware configuration. Since there are no issues
>> using the firmware PM driver with the same setup, there must be an issue
>> in the BCM2835 PM driver.
>>
>> Unfortunately there hasn't been much progress in identifying the root cause
>> since June (mostly in the lack of documentation), so i decided to switch
>> back until the issue in the BCM2835 PM driver is fixed.
>>
>> Link: https://github.com/raspberrypi/linux/issues/3046
>> Fixes: e1dc2b2e1bef (" ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware.")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
> Applied to devicetree/fixes, thanks!
i noticed that X hangs with recent Raspbian and Linux 5.4-rc2 after this
revert has been applied.
Is there a chance to drop the revert?
Stefan
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next prev parent reply other threads:[~2019-10-09 21:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-08 15:44 [PATCH] Revert "ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware." Stefan Wahren
2019-09-11 20:48 ` Eric Anholt
2019-09-20 17:52 ` Florian Fainelli
2019-09-20 22:55 ` Stefan Wahren
2019-09-23 18:56 ` Florian Fainelli
2019-10-09 21:33 ` Stefan Wahren [this message]
2019-10-09 21:42 ` Florian Fainelli
2019-10-10 7:09 ` Stefan Wahren
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