RK3506 uboot logo不能显示在mipi屏幕上，一直以为是mipi转hdmi驱动导致的（因为lt8912b驱动在uboot初始化），但是kernel没有引用HDMI的dtsi，而是mipi屏幕的dtsi，今天看了开机日志uboot部分
U-Boot 2017.09-g7465592-250310-dirty #root (Dec 31 2025 - 19:16:05 +0800)
Model: Rockchip RK3506 EVB Board
MPIDR: 0xf00
PreSerial: 0, raw, 0xff0a0000
DRAM: 256 MiB
Sysmem: init
Relocation Offset: 0ebef000
Relocation fdt: 0dbfaa90 - 0dbfedd8
CR: M/C/I
Using default environment
DM: v2
mmc@ff480000: 0
GUID Partition Table Entry Array CRC is wrong: 0xb13cc005 != 0xab54d286
Repair the backup gpt table OK!
Bootdev(atags): mmc 0
MMC0: Legacy, 52Mhz
PartType: EFI
boot mode: None
RESC: 'boot', blk@0x0000a6c0
resource: sha256+
FIT: no signed, no conf required
DTB: rk-kernel.dtb
HASH(c): OK
vdd_arm init 1011000 uV
Could not find baseparameter partition
Model: HZ-RK3506_MiniEVM SD
Rockchip UBOOT DRM driver version: v1.0.1
Using display timing dts
dsi@ff640000: detailed mode clock 27000 kHz, flags[a]
H: 0480 0512 0516 0548
V: 0800 0809 0813 0816
bus_format: 100e
VOP:0xff600000 update mode to: 480x800p60, type: MIPI0
VOP:0xff600000 set crtc_clock to 27000KHz, get 26785714Hz
Unsupported bt709f at 10bit csc depth, use bt601f instead
ERROR: scale factor is out of range
CLK: (arm clk use pvtpll, rate = 1200M)
gpll 1500000 KHz
从日志看到其实是kernel里面logo.bmp尺寸与mipi屏幕尺寸不适配导致的,改下图片就正常显示了，与lt8912b驱动无关