LibreELEC:~ # dmesg | grep -iE "vop|vp0|dclk"
[    0.050632] /vop@fdd90000: Fixed dependency cycle(s) with /hdmi@fde80000
[    0.050664] /hdmi@fde80000: Fixed dependency cycle(s) with /vop@fdd90000
[    0.065897] /vop@fdd90000: Fixed dependency cycle(s) with /hdmi@fdea0000
[    0.065933] /hdmi@fdea0000: Fixed dependency cycle(s) with /vop@fdd90000
[    0.240102] platform fdd90000.vop: Adding to iommu group 7
[    0.245018] rockchip-drm display-subsystem: bound fdd90000.vop (ops vop2_component_ops)
[  248.346245] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346285] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346305] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346323] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346342] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346361] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346379] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346397] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346416] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0
[  248.346434] rockchip-drm display-subsystem: [drm] *ERROR* POST_BUF_EMPTY irq err at vp0