This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM335x SD 卡 启动时遇到 Waiting for root device /dev/mmcblk0p2...

[    1.304107] ThumbEE CPU extension supported.
[    1.308624] mux: Failed to setup hwmod io irq -22
[    1.314056] Power Management for AM33XX family
[    1.318878] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[    1.325561] Copied the M3 firmware to UMEM
[    1.330383] sr_init: platform driver register failed
[    1.338653] clock: disabling unused clocks to save power
[    1.356872] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    1.363922] Waiting for root device /dev/mmcblk0p2...

SD 卡启动时一直停在这里,SD 卡的分区正确,rootfs 也可以正常工作,用同一张 SD 卡,相同的 rootfs 可以成功启动别的 AM335x 但是启动 新板子的时候就会遇到这种情况。之前的板子用的是 DDR2 ,现在这块新板子用的是 DDR3,关于 DDR 的配置我已经在 u-boot 和 kernel 中修改过了。目前就停留在 [    1.363922] Waiting for root device /dev/mmcblk0p2... 求帮助,谢谢。