[IMX] [DRM]: suspend/resume support

[Pintu Agarwal]

On Fri, Jun 21, 2019 at 9:09 PM Fabio Estevam <festevam at gmail.com> wrote:
>
> On Fri, Jun 21, 2019 at 12:13 PM Pintu Agarwal <pintu.ping at gmail.com> wrote:
>
> > Okay there is some update on the 2nd part.
> > Now I am able to successfully install all imx modules after the resume
> > (no hang).
> > But, I got some errors after install finish:
> > [drm] disabling vblank on crtc 1
> > [IMX]: imx_drm_disable_vblank - called
> > [drm:drm_atomic_helper_commit_cleanup_done] *ERROR* [CRTC:24:crtc-0]
> > flip_done timed out
> >
> > Also I am able to start the weston successfully.
> > But I see LCD/HDMI display is not working (only some backlight is visible).
> >
> > And, I noticed, weston also reports the following errors:
> > imx-ipuv3 2400000.ipu: DC stop timeout after 50 ms
> > [IMX]: drm_crtc_vblank_off - called
> > [IMX]: imx_drm_disable_vblank - called
> > INFO: rcu_preempt detected stalls on CPUs/tasks: { 1} (detected by 0,
> > t=6002 jiffies, g=289, c=288, q=8)
> > Task dump for CPU 1:
> > weston          R running      0   306      1 0x00000000
> > [<c05282d8>] (__schedule) from [<00080193>] (0x80193)
> >
> > Do you have any clue about these errors ?
>
> Which kernel version is this?

Please let me know in which version this issue is fixed.
I will try that.
I think I saw some commit that mentions about it, but I forgot.
Anyways, I am checking again.
Thanks!