[BUG] drm_rockchip: rk3066_hdmi: No driver support for vblank timestamp query.

[Tomasz Figa]

Hi Johan,

It looks like VOP on RK3066 is not officially supported by upstream, so
what you're seeing is not a bug, it's just expected behavior, because
nobody had the time (or need) to enable support for your hardware yet.

I added all the people that may be potentially thinking to add support for
this SoC, but they have no obligation to do so. If you are in an urgent
need, I think you may have more luck asking your hardware or SoC vendor
directly.

Best regards,
Tomasz


On Sat, Dec 1, 2018 at 3:53 AM Johan Jonker <jbx9999 at hotmail.com> wrote:

> Hi,
>
> This is about a TV stick called MK808.
> Enabled VOP an HDMI for rk3066.
> Able to see pinguins at boot.
>
> Found similar bug reports for rk3399.
>
> http://lists.infradead.org/pipermail/linux-rockchip/2018-April/020426.html
> http://lists.infradead.org/pipermail/linux-rockchip/2018-April/020427.html
> http://lists.infradead.org/pipermail/linux-rockchip/2018-April/020428.html
>
>
> This patch doesn't seem to work for me.
>
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -1601,6 +1601,8 @@ static void vop_unbind(struct device *dev, struct
> device *master, void *data)
>   {
>          struct vop *vop = dev_get_drvdata(dev);
>
> +       // Pair with the initial disable_irq()
> +       enable_irq(vop->irq);
>
> Compared to rk3399 the rk3066 doesn't seem to have iommu.
>
> [    0.383273] rockchip-drm display-subsystem:
> [drm:rockchip_drm_platform_probe] no iommu attached for /vop at 1010c000,
> using non-iommu buffers
>
> Bugs as usual:
>
>
> [    4.730057] rockchip-vop 1010c000.vop: [drm:vop_crtc_atomic_flush]
> *ERROR* VOP vblank IRQ stuck for 10 ms
>
> [  596.422383] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*
> [CRTC:30:crtc-0] flip_done timed out
>
> [  606.661508] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*
> [CONNECTOR:33:HDMI-A-1] flip_done timed out
>
> [  616.901899] [drm:drm_atomic_helper_wait_for_dependencies] *ERROR*
> [PLANE:28:plane-0] flip_done timed out
>
>
>
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