Re: [U-Boot] [bug report] sunxi: booting from eMMC

define debug() in your mmc driver..or enable CONFIG_DEBUG..then you can see all debug message.

When i define CONFIG_DEGUB, u-boot binary size is to large for a20 sram I have tried to disable unused features in config, but its not enough

If you're setting MMC_MODE_8BIT..try to remove it..

I am not never set 8 bit mode And now found it defines

#define MMC_MODE_4BIT (1 << 2) #define MMC_MODE_8BIT (1 << 3)

and replace with

#define MMC_MODE_4BIT (1 << 2) #define MMC_MODE_8BIT (1 << 2) //(1 << 3)

The same result.