U-BOOT启动出现问题
最近公司按照飞思卡尔官方给的开发板做了一个I.MX6Q的开发板，外围电路参照官方给的原理图，选择SD卡下载和启动模式，在串口打印的信息中可以看到U-BOOT没有完全启动以下是串口打印信息：
U-Boot 2009.08 ( 4月 27 2016 - 10:23:08)
CPU: Freescale i.MX6 family TO1.5 at 792 MHz
Thermal sensor with ratio = 177
Temperature: 22 C, calibration data 0x55f4bd7d
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock : 66000000Hz
ipg per clock : 66000000Hz
uart clock : 80000000Hz
cspi clock : 60000000Hz
ahb clock : 132000000Hz
axi clock : 264000000Hz
emi_slow clock: 132000000Hz
ddr clock : 528000000Hz
usdhc1 clock: 198000000Hz
usdhc2 clock: 198000000Hz
usdhc3 clock: 198000000Hz
usdhc4 clock: 198000000Hz
nfc clock : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015
Boot Device: SD
I2C: ready
DRAM: 1 GB
MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
然后就停在这里
但是使用飞思卡尔官方给的开发板中看到串口打印信息
U-Boot 2009.08 ( 4月 27 2016 - 10:23:08)
CPU: Freescale i.MX6 family TO1.2 at 792 MHz
Thermal sensor with ratio = 189
Temperature: 33 C, calibration data 0x5ae4f87d
mx6q pll1: 792MHz
mx6q pll2: 528MHz
mx6q pll3: 480MHz
mx6q pll8: 50MHz
ipg clock : 66000000Hz
ipg per clock : 66000000Hz
uart clock : 80000000Hz
cspi clock : 60000000Hz
ahb clock : 132000000Hz
axi clock : 264000000Hz
emi_slow clock: 132000000Hz
ddr clock : 528000000Hz
usdhc1 clock: 198000000Hz
usdhc2 clock: 198000000Hz
usdhc3 clock: 198000000Hz
usdhc4 clock: 198000000Hz
nfc clock : 24000000Hz
Board: i.MX6Q-SABRESD: unknown-board Board: 0x63012
Boot Device: SD
I2C: ready
DRAM: 1 GB
MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
*** Warning - bad CRC or MMC, using default environment
In: serial
Out: serial
Err: serial
i2c: I2C3 SDA is low, start i2c recovery...
I2C3 Recovery success
Found PFUZE100! deviceid=10,revid=11
Net: got MAC address from IIM: 00:04:9f:03:cd:c8
为什么会出现这样的问题 没人回复，帖子要沉了，自己顶一下 目前看一切一切正常，在源码里加些打印看看吧
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