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

Stefan Wahren wahrenst at gmx.net
Fri Sep 20 22:55:21 UTC 2019

Hi Florian,

Am 20.09.19 um 19:52 schrieb Florian Fainelli:
> On 9/8/19 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>
> Do you want me to pick up this change directly, or would you want to
> issue a pull request for 5.4-rcX with other fixes?

there aren't any other fixes, please pick up this directly.



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