arm linux mmc驱动问题，请大侠帮把把脉

armips

信息如一下所示，mmc驱动，挂在文件系统 以及 读写小数据量文件都没有问题，当读写大量数据的时候
就会出现CMD13的响应超时：
imx-mmc imx-mmc.0: RESP TIMEOUT, hardware stucked STATUS = 0x9e40 IMASK = 0x007b
imx-mmc imx-mmc.0: CMD_DAT_CONT = 0x0201, MMC_BLK_LEN = 0x0200, MMC_NOB = 0x0002
, DMA_CCR = 0x00000000
imx-mmc imx-mmc.0: CMD13, prevCMD13, bus 4-bit, dma_size = 0x400
间隔约2秒不断的打印，郁闷了好几天了，还是没有找到，请各位看看有没有碰到过类似问题，谢谢！


console [ttymxc0] enabled
imx-uart.1: ttymxc1 at MMIO 0x207000 (irq = 24) is a IMX
brd: module loaded
PPP generic driver version 2.4.2
PPP Deflate Compression module registered
PPP BSD Compression module registered
NET: Registered protocol family 24
SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@fluxnic.net>
eth0: SMC91C11xFD (rev 1) at c1810300 IRQ 131 [nowait]
eth0: Ethernet addr: 00:0a:a3:02:02:c8
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
Driver for 1-wire Dallas network protocol.
i.MX mmc driver
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
Freeing init memory: 100K
init started: BusyBox v1.17.3 (2010-10-27 09:27:58 CST)
Processing etc/init.d/rc.S
Mount all.................[OK]
Start mdev................[OK]
imx-mmc imx-mmc.0: card inserted
Config loopback...........[OK]
eth0: link down
****************************************************
rootfs by cpio, mc9328mx1
Created by xyz @ 2010.10.25
Enjoy it!!!
****************************************************


Processing /etc/profile...  Set search library path
Set user path
Set PS1
All Done

[root@localhost /]# mmc0: new SD card at address 7b87
mmcblk0: mmc0:7b87 SD256 243 MiB
mmcblk0: p1 p2

[root@localhost /]# cd /mnt/mmc
[root@localhost /mnt/mmc]# mkdir p1
[root@localhost /mnt/mmc]# mkdir p2
[root@localhost /mnt/mmc]# mount -t vfat /dev/mmcblk0p1 ./p1
[root@localhost /mnt/mmc]# mount -t auto /dev/mmcblk0p2 ./p2
EXT2-fs (mmcblk0p2): warning: mounting ext3 filesystem as ext2
EXT2-fs (mmcblk0p2): warning: mounting unchecked fs, running e2fsck is recommend
ed

imx-mmc imx-mmc.0: RESP TIMEOUT, hardware stucked STATUS = 0x9e40 IMASK = 0x007b
imx-mmc imx-mmc.0: CMD_DAT_CONT = 0x0201, MMC_BLK_LEN = 0x0200, MMC_NOB = 0x0002
, DMA_CCR = 0x00000000
imx-mmc imx-mmc.0: CMD13, prevCMD13, bus 4-bit, dma_size = 0x400
[root@localhost /mnt/mmc]#
[root@localhost /mnt/mmc]# cd p2
[root@localhost /mnt/mmc/p2]# ls
abc         lost+found
[root@localhost /mnt/mmc/p2]# cd abc
[root@localhost /mnt/mmc/p2/abc]# ls
hello
[root@localhost /mnt/mmc/p2/abc]# ./hello
Hello World!
[root@localhost /mnt/mmc/p2/abc]#
[root@localhost /mnt/mmc/p2/abc]#

深蓝苹果

不懂MMC，纯帮顶

不过觉得可能和工作模式设定有关，默认的模式只支持短时延的小数据读取，数据量多了就返回超时信号？？？