Hi, Now we implemented the mobile storage and want to posting it to mmc. But during code review I know that it's almost similar with sdhci core except register offset and fifo support. So I wonder what's the better way to implement it. 1) create the mstorage.[ch] 2) override the existing sdhci using io accessors function. Basic Mobile Storage Host controller register is following. CTRL: 0x0000 PWREN: 0x0004 CLKDIV: 0x0008 CLKSRC: 0x000C CLKENA: 0x0010 TMOUT: 0x0014 CTYPE: 0x0018 BLKSIZ: 0x001C BYTCNT: 0x0020 INTMASK: 0x0024 CMDARG: 0x0028 CMD: 0x002C ... Any comments are welcome. Thank you, Kyungmin Park -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html