根据坛友“全志A33 主线u-boot/Linux入坑记录 https://whycan.com/t_3643.html”教程编译的uboot，一个智能音箱里面自带整套程序，想移植个支持ums命令的uboot临时写入内存，然后拷贝emmc的镜像，按着教程编译的uboot用sunxi-tools的sunxi-fei写入，启动能正常进uboot，但emmc显示Card did not respond to voltage select!
移植的uboot开机跑码信息如下：
CPU: Allwinner A33 (SUN8I 1667)
Model: Sinlinx SinA33
DRAM: 512 MiB
MMC: MMC0: 01c20060 = 0x1004140, 01c20088 = 0x0, 01c202c0 = 0x1004140
MMC2: 01c20060 = 0x1004540, 01c20090 = 0x0, 01c202c0 = 0x1004540
mmc@1c0f000: 0, mmc@1c11000: 1
Loading Environment from FAT... Card did not respond to voltage select!
Setting up a 1024x600 lcd console (overscan 0x0)
In: serial
Out: vga
Err: vga
Allwinner mUSB OTG (Peripheral)
Net:
Warning: usb_ether using MAC address from ROM
eth0: usb_ether
starting USB...
USB0: USB EHCI 1.00
USB1: USB OHCI 1.0
scanning bus 0 for devices... 1 USB Device(s) found
scanning bus 1 for devices... 1 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Hit any key to stop autoboot: 0
原版uboot开机启动信息如下：
33] boot0 version : 4.0.0
[0.698] Jump to secend Boot.
[ 0.700]U-Boot 2011.09-rc1-00011-gf4458ab-dirty (Feb 26 2018 - 11:29:40) Allwinner Technology
[ 0.925][mmc]: mmc driver ver 2014-12-10 9:23:00
[ 0.930][mmc]: get sdc_phy_wipe fail.
[ 0.933][mmc]: get sdc0 sdc_erase fail.
[ 0.937][mmc]: get sdc_2xmode ok, val = 1
[ 0.942][mmc]: get sdc_ddrmode ok, val = 1
[ 0.946][mmc]: get sdc_f_max fail,use default 50000000Hz
[ 0.951][mmc]: get card_line ok, card_line = 8
[ 0.956][mmc]: get sdc_ex_dly_used fail,use default
[ 0.961][mmc]: SUNXI SD/MMC: 2[ 0.974][mmc]: *Try SD card 2*
[ 0.977][mmc]: mmc 2 cmd 8 err 100
[ 0.983][mmc]: mmc send if cond failed
[ 0.987][mmc]: mmc 2 cmd 55 err 100
[ 0.992][mmc]: send app cmd failed
[ 0.995][mmc]: *Try MMC card 2*
[ 1.035][mmc]: ddr8
[ 1.049][mmc]: CID 0x15010034 0x46504433 0x520212ed 0xb2b46459
[ 1.054][mmc]: MMC ver 5.0
[ 1.057][mmc]: mmc clk 50000000
[ 1.060][mmc]: SD/MMC Card: 8bit, capacity: 3728MB
[ 1.065][mmc]: boot0 capacity: 4000KB,boot1 capacity: 4000KB
[ 1.071][mmc]: ***SD/MMC 2 init OK!!!***
[ 1.076][mmc]: erase_grp_size:0x400WrBlk * 0x200 = 0x80000 Byte
[ 1.081][mmc]: secure_feature 0x55
[ 1.085][mmc]: secure_removal_type 0x9
In: serial
Out: serial
Err: serial
[ 4.405][mmc]: blkcnt should not be 0
sun8iw5p1 s_i2c >>>
[ 7.967][mmc]: mmc exit start
[ 7.983][mmc]: mmc 2 cmd 8 err 100
[ 7.988][mmc]: mmc send if cond failed
[ 7.992][mmc]: mmc 2 cmd 55 err 100
[ 7.997][mmc]: send app cmd failed
[ 8.009][mmc]: get sdc_phy_wipe fail.
[ 8.013][mmc]: get sdc0 sdc_erase fail.
[ 8.016][mmc]: get sdc_2xmode ok, val = 1
[ 8.021][mmc]: get sdc_ddrmode ok, val = 1
[ 8.025][mmc]: get sdc_f_max fail,use default 50000000Hz
[ 8.030][mmc]: get card_line ok, card_line = 8
[ 8.035][mmc]: get sdc_ex_dly_used fail,use default
[ 8.040][mmc]: mmc 2 exit ok
[ 8.043]Starting kernel ...
各位大佬，是在编译的时候哪里还要再设置吗？怎么才能读写emmc
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EMMC是哪个品牌的？可能是驱动的兼容性问题， 正常换WINBOND/GD试下。 小品牌的可能会有这种问题。
你好，是三星的emmc，换Winbond/gd是在哪里操作 🤣
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