我使用了芯灵思的A33核心板，现在在调试MIPI屏，发现在uboot阶段就卡住了，打印信息我贴在下面，麻烦各位老师给看看，谢谢！
U-Boot 2011.09-rc1-00004-ga1ab41d (Jul 28 2014 - 16:21:09) Allwinner Technology
[ 0.358]version: 1.1.0
[ 0.439]pmbus: ready
[ 0.441]PMU: AXP221
[ 0.443]PMU: AXP22x found
[ 0.447]PMU: dcdc3 1200
[ 0.450]PMU: pll1 1008 Mhz,PLL6=600 Mhz
AXI=336 Mhz,AHB=200 Mhz, APB1=100 Mhz
set power on vol to default
dcdc1_vol = 3000
dcdc2_vol = 1100
dcdc3_vol = 1200
dcdc4_vol = 0
dcdc5_vol = 1500
aldo2_vol = 2500
aldo3_vol = 3000
find power_sply to end
no battery, limit to dc
fel key new mode
run key detect
no key found
0x20
dram_para_set start
dram_para_set end
[ 0.498]DRAM: 1 GiB
relocation Offset is: 35b11000
smcl's set manager is NULL
到这就不再打印了，不知道这个smcl是个什么东西
