[PATCH] Revert "ARM: bcm283x: Switch V3D over to using the PM driver instead of firmware."

[Florian Fainelli]

On 10/9/19 2:33 PM, Stefan Wahren wrote:
> 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 at vger.kernel.org
>>> Signed-off-by: Stefan Wahren <wahrenst at 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?

I have not sent anything yet as I wanted to get some testing done on
other platforms, so yes, I can definitively drop that particular changes
from devicetree/fixes and not send it for a 5.4-rc3 pull request. Does
that work for you?
-- 
Florian