uboot阶段注释掉CONFIG_DISP2_SUNXI后，启动log会卡住。

[mangogeek]

环境：1.0.1 tina-d1-open

在运行OK的代码基础上，只将uboot下configs里的 sun20iw1p1_defconfig 中 CONFIG_DISP2_SUNXI 注释掉，方法参考自：（ D1_Tina_linux_LCD_调试指南.pdf p70）。
启动log会卡到如下位置：

[    2.520958] sunxi-spinand-phy: ========== logical info ==========
[    2.527747] sunxi-spinand-phy: TotalSize:    256 M
[    2.550957] sunxi-spinand-phy: SectorSize:   512 B
[    2.556294] sunxi-spinand-phy: PageSize:     4 K
[    2.570958] sunxi-spinand-phy: BlockSize:    256 K
[    2.576294] sunxi-spinand-phy: OOBSize:      128 B
[    2.590959] sunxi-spinand-phy: ========================================
[    2.611031] sunxi-spinand-phy: block lock register: 0x00
[    2.617123] sunxi-spinand-phy: feature register: 0x11
[    2.630966] sunxi-spinand-phy: sunxi physic nand init end
[    2.641473] Creating 4 MTD partitions on "sunxi_mtd_nand":
[    2.647611] 0x000000000000-0x000000100000 : "boot0"

后卡住不动。

正常系统应该继续如下打印：

[    1.472105] 0x000000100000-0x000000500000 : "uboot"
[    1.477818] random: fast init done
[    1.512083] 0x000000500000-0x000000600000 : "secure_storage"
[    1.532115] 0x000000600000-0x000010000000 : "sys"
[    1.936841] random: crng init done
[    2.702598] libphy: Fixed MDIO Bus: probed