On Thu, Oct 18, 2012 at 6:51 AM, Marek Vasut <marex@xxxxxxx> wrote: > Dear Huang Shijie, > >> 于 2012年10月18日 16:49, Marek Vasut 写道: >> > Dear Huang Shijie, >> > >> >> 于 2012年10月18日 16:16, Marek Vasut 写道: >> >>> So we can't stream data from the chip? About time to adjust the MTD >> >>> framework to allow that. Maybe implement a command queue? >> >> >> >> IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to >> >> check the busy status >> >> which means we have to stop in the middle, so we can not chain the all >> >> the read-pages DMA commands. >> > >> > Can the DMA not branch? >> >> it's too complicated to the MTD layer, as well as the gpmi driver. > > Can you please elaborate ? could you read the nand spec about how to read a page out with the READ-PAGE(00-30) command, and tell me how to make the DMA branch? I really have no idea about how to make the DMA branch. thanks Huang Shijie . > Best regards, > Marek Vasut -- 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
