Re: [PATCH 1/2] drm/vc4: kms: Assign a FIFO to enabled CRTCs instead of active

[Maxime Ripard <maxime@cerno.tech>]

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On Thu, Sep 24, 2020 at 05:08:56PM +0900, Hoegeun Kwon wrote:
> Hi Maxime,
> 
> On 9/18/20 11:59 PM, Maxime Ripard wrote:
> > The HVS has three FIFOs that can be assigned to a number of PixelValves
> > through a mux.
> >
> > However, changing that FIFO requires that we disable and then enable the
> > pixelvalve, so we want to assign FIFOs to all the enabled CRTCs, and not
> > just the active ones.
> 
> Thanks for the patch.
> 
> There is a problem when doing page flip.
> After connecting 2 HDMIs without hotplug and booting.(Same thing when
> using hotplug.)
> 
> When executing page flip for each of HDMI 0 and 1 in modetest
> operation does not work normally. (crtc irq does not occur, so timeout 
> occurs.)
> Sometimes both hdmi 0 or 1 work or not.
> 
> LOGs:
> root:~> modetest -Mvc4 -s 32:1280x720 -v
> setting mode 1280x720-60Hz@XR24 on connectors 32, crtc 64
> failed to set gamma: Invalid argument
> freq: 60.24Hz
> freq: 60.00Hz
> 
> root:~> modetest -Mvc4 -s 38:1280x720 -v
> setting mode 1280x720-60Hz@XR24 on connectors 38, crtc 69
> failed to set gamma: Invalid argument
> select timed out or error (ret 0)
> select timed out or error (ret 0)
> 
> Could you please check it?

I'll look into it, thanks :)

Maxime

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