RV1126&1109 上调试MIPI 480*1920长条屏

根据 Rockchip_DRM_Panel_Porting_Guide_V1.6_20190228.pdf 移植了一款480*1920的屏。但是现在除了背光可以亮外，屏一点显示也没有。关键的打印信息如下（SDK版本是V2.1的）：

[root@RV1126_RV1109:/]# dmesg | grep drm
[    0.177734] rockchip-drm display-subsystem: Linked as a consumer to ffb00000.vop
[    0.178679] rockchip-drm display-subsystem: Linked as a consumer to ffb30000.dsi
[    0.179942] rockchip-drm display-subsystem: devfreq is not set
[    0.180414] rockchip-drm display-subsystem: bound ffb00000.vop (ops 0xb093e180)
[    0.180486] dw-mipi-dsi ffb30000.dsi: [drm:dw_mipi_dsi_bind] *ERROR* Failed to find panel or bridge: -517
[    0.180523] rockchip-drm display-subsystem: failed to bind ffb30000.dsi (ops 0xb09448ac): -517
[    0.180789] rockchip-drm display-subsystem: master bind failed: -517
[    0.993902] rockchip-drm display-subsystem: devfreq is not set
[    0.994191] rockchip-drm display-subsystem: bound ffb00000.vop (ops 0xb093e180)
[    0.994239] rockchip-drm display-subsystem: bound ffb30000.dsi (ops 0xb09448ac)
[    0.994254] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    0.994264] [drm] No driver support for vblank timestamp query.
[    1.006100] [drm] Initialized rockchip 2.0.0 20140818 for display-subsystem on minor 0

[root@RV1126_RV1109:/]# cat /sys/kernel/debug/dri/0/summary
VOP [ffb00000.vop]: ACTIVE
    Connector: DSI
        bus_format[100a]: RGB888_1X24
        overlay_mode[0] output_mode[0] color_space[0]
    Display mode: 480x1920p60
        clk[66300] real_clk[66300] type[48] flag[a]
        H: 480 510 540 570
        V: 1920 1926 1932 1938
    win0-0: DISABLED
    win2-0: ACTIVE
        format: RG24 little-endian (0x34324752) SDR[0] color_space[0]
        csc: y2r[0] r2r[0] r2y[0] csc mode[0]
        zpos: 0
        src: pos[0x0] rect[480x1920]
        dst: pos[0x0] rect[480x1920]
        buf[0]: addr: 0x7df00000 pitch: 1440 offset: 2768950
    post: sdr2hdr[0] hdr2sdr[0]
    pre : sdr2hdr[0]
    post CSC: r2y[0] y2r[0] CSC mode[1]

[root@RV1126_RV1109:/]# cat /sys/kernel/debug/clk/clk_summary | grep vop
          dclk_vop_div                1        1        0    66000000          0     0  50000
             dclk_vop_mux             1        1        0    66000000          0     0  50000
                dclk_vop              1        3        0    66000000          0     0  50000
             dclk_vop_fracdiv         0        0        0    66000000          0     0  50000
             aclk_vop                 1        5        0   297000000          0     0  50000
                hclk_vop              1        5        0   148500000          0     0  50000

已跟屏幕的厂家确认说不需要MIPI初始化序列的那些寄存器配置。
附件是设备树文件及这款屏的资料，请问下到底是什么问题？