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@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?
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?