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MMC mount in Nand Boot

Added by Manjunath K S almost 5 years ago

Hi,
we have flashed u-boot and kernel to Nand and trying Nand boot of the kernel, after kernel boots up,
When we insert SD card(MMC) , it is not mounting. What could be the problem in rootfs or kernel.
Hardware+
We are using the “MitySOM-335x Processor Card” in our target board. On the processor card with we have AM3359 mounted. We have Micrel KSZ9021 Phy connected to external interface as per “MitySOM_Ethernet_Interface.xlsx”
Development environment:
+
We are using TI SDK 05.03.00 for building u-boot and Kernel.

Please help us.

Regards,
Manjunath


Replies (4)

RE: MMC mount in Nand Boot - Added by Jonathan Cormier almost 5 years ago

Does the same u-boot and kernel behave the same using our devkit? Can you attach a full boot log showing the problem?

RE: MMC mount in Nand Boot - Added by Manjunath K S almost 5 years ago

Hi ,

We don't have your devkit to test on.
I cant explain in log as there is no log telling mounted or unmounted.

Regards,
Manjunath

RE: MMC mount in Nand Boot - Added by Jonathan Cormier almost 5 years ago

Is your hardware using the same mmc port as the devkit? If so then no changes to the software should be needed unless your using a microsd without card detect. If there is no card detect pin, you need to disable the pin in u-boot/kernel.

https://support.criticallink.com/gitweb/?p=linux-mityarm-335x.git;a=blob;f=arch/arm/mach-omap2/baseboard-mityarm335x-devkit.c;h=04981bd5cae002739e20d4c15688b1e315c9adc2;hb=refs/heads/mityarm-linux-v3.2#l288

RE: MMC mount in Nand Boot - Added by Manjunath K S almost 5 years ago

Hi ,
Yes it is using same mmc port ,Thank you for your suggestions , we were able resolve the issue .

Regards,
Manjunath

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