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SS928用串口烧写uboot求助
1.如图所示烧写uboot失败
2.烧写uboot方式：串口烧写emmc（uboot配置已检查）如下图所示
3.时钟，电源，复位测试正常，复位设计（外部复位设计）：ss928和emmc复位同时由复位芯片输出，设计如下
4.DDR4设计：完全参考DOME板设计（单端口 两片DDR4）
现在怀疑是DDR4设计问题，有大佬用过SS928domo板DDR4参考设计并成功烧写Uboot的吗，请教大佬们有可能是什么原因造成的，实在是找不到原因了
这种情况大概率DDR问题
现在是不确定是硬件问题还是DDR4配置问题，硬件是参照官方设计，地址线没这样用过，官方手册也没DDR4时序配置的说明
用热风枪重新吹一下ddr，不排除有假焊的情况，我还遇到CPU都有假焊的。
老哥用过官方DDR4设计：地址线没有一一对应设计然后成功烧写uboot吗？
是将双颗改单颗ddr的，改了后sdk中会有工具将改过的xlsx文件转换为系统能识别的数据，再编译就OK
老哥，我再描述一下：单通道模式双颗DDR4改成单颗DDR4，DDR4的设计跟官方DMOE是一样的，将改过的xlsx文件转换后，编译后可以成功烧写uboot，是这个意思吗？
可以的
好的，感谢
已解决串口烧写uboot失败问题，可以成功，现在是uboot起不来问题。，任重而道远啊
老哥。问题解决了吗？我现在也遇到3403这个问题，方便解惑一下吗？
串口烧写失败问题吗？
我现在也遇到这个串口烧写失败的问题，方便告诉怎么解决的吗
你好 你这个问题怎么解决的 方便加个联系方式细聊吗
烧写失败打印信息是什么样的，我们跟官方联系了说DDR的设计必须完全拷贝官方的dome板设计，现在准备改板
我有个雄迈的3516cv300也是一样的问题，能凑合烧到100%，但uboot起不来，只打印第一句“system startup…”
我也遇到过这种问题，大概率是主芯片有问题
串口烧写失败问题，检查硬件上跟下电检测管脚AVDD18_PFI有关，硬件上要求必须参照官方的设计，uboot起不来跟DDR没有拷贝官方设计有关，必须完全拷贝官方的设计
串口烧写失败问题，检查硬件上跟下电检测管脚AVDD18_PFI有关,具体是哪个电路呢？能截图下吗？
AVDD18_PFI正常,UBOOT还是烧录有问题
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