From: Florian Fainelli <f.fainelli@gmail•com>
To: Stefan Wahren <wahrenst@gmx•net>, Eric Anholt <eric@anholt•net>,
Florian Fainelli <f.fainelli@gmail•com>,
Ray Jui <rjui@broadcom•com>,
Scott Branden <sbranden@broadcom•com>,
Paul Kocialkowski <paul.kocialkowski@bootlin•com>,
boris.brezillon@bootlin•com
Cc: stable@vger•kernel.org, 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: Mon, 23 Sep 2019 11:56:52 -0700 [thread overview]
Message-ID: <26e101ad-8b5b-edef-4437-778bc57ae81f@gmail.com> (raw)
In-Reply-To: <1567957493-4567-1-git-send-email-wahrenst@gmx.net>
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!
--
Florian
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next prev parent reply other threads:[~2019-09-23 18:57 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 [this message]
2019-10-09 21:33 ` Stefan Wahren
2019-10-09 21:42 ` Florian Fainelli
2019-10-10 7:09 ` Stefan Wahren
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