[regression] RPI4B drm vc4: no crtc or sizes since 5.17 (works in 5.16; and still broken in at least 6.1)

[AL13N]

Hi,

I have a RPI4B connected on 2nd HDMI port (furthest away from power) to 
a 4K TV, which works until 5.16, from 5.17 there is no X (or plymouth), 
the cause of no X is that EDID gives nothing, and in the journal; there 
is "Cannot find any crct or sizes". Only the kernel is changed for this.

In 5.16 instead of this message there is a bunch of hex lines prefixed 
with BAD.

It is still broken in 6.1 at the very least.

I donno if this is related to this part, but I wanted to try a newer 
kernel, because the RPI4 seems to do all the video decoding in software 
and cannot seem to handle it.


logs:
vc4-drm gpu: bound fef05700.hdmi (ops vc4_hdmi_ops [vc4])
vc4-drm gpu: bound fe004000.txp (ops vc4_txp_ops [vc4])
vc4-drm gpu: bound fe206000.pixelvalve (ops vc4_crtc_ops [vc4])
vc4-drm gpu: bound fe207000.pixelvalve (ops vc4_crtc_ops [vc4])
vc4-drm gpu: bound fe20a000.pixelvalve (ops vc4_crtc_ops [vc4])
vc4-drm gpu: bound fe216000.pixelvalve (ops vc4_crtc_ops [vc4])
vc4-drm gpu: bound fec12000.pixelvalve (ops vc4_crtc_ops [vc4])
checking generic (3ea81000 12c000) vs hw (0 ffffffffffffffff)
fb0: switching to vc4 from simple
Console: switching to colour dummy device 80x25
[drm] Initialized vc4 0.0.0 20140616 for gpu on minor 0
vc4-drm gpu: [drm] Cannot find any crtc or sizes