DSI Screen Problem in V2.0.0 beta

BTT Pi2 and the new beta image, DSI is configured in system.cfg and armbianENV.txt
The backlight of the display is on but there is no output on the screen.

> root@bigtreetech-cb2:~# dmesg | grep -i dsi
[ 0.105394] platform fe040000.vop: Fixed dependency cycle(s) with /dsi@fe070000
[ 1.464837] phy phy-fe070000.dsi.8: Looking up phy-supply from device tree
[ 1.464889] phy phy-fe070000.dsi.8: Looking up phy-supply property in node /dsi@fe070000 failed
[ 1.480345] dw-mipi-dsi-rockchip fe070000.dsi: failed to find panel or bridge: -517
[ 2.449786] dw-mipi-dsi-rockchip fe070000.dsi: failed to find panel or bridge: -517
[ 2.450726] panel-simple-dsi fe070000.dsi.0: Looking up power-supply from device tree
[ 2.450765] panel-simple-dsi fe070000.dsi.0: Looking up power-supply property in node /dsi@fe070000/panel@0 failed
[ 2.450902] panel-simple-dsi fe070000.dsi.0: supply power not found, using dummy regulator
[ 2.637126] rockchip-drm display-subsystem: bound fe070000.dsi (ops 0xffffffc0094e1300)
[ 4.434123] dw-mipi-dsi-rockchip fe070000.dsi: [drm:dw_mipi_dsi_bridge_atomic_enable] final DSI-Link bandwidth: 720 x 1 Mbps
[ 9.525038] dw-mipi-dsi-rockchip fe070000.dsi: Read payload FIFO is empty

`