Problem may occur if configure PATA_DMACK&PATA_DIOW as Uart1

Document created by caohaifeng on Jul 1, 2013
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The solution works when I use mx53_loco bsp.

 

Modify u-boot and kernel, keep the same. Then you may find you can't login into the system regardless of whatever you input after freescale login:

It confused me for a long time.

If you  also met this problem,try to check the iomux-mx53.h(linux/arch/arm/plat-mxc/include/mach/).

#define _MX53_PAD_PATA_DIOW__UART1_TXD_MUX   IOMUX_PAD(the fourth argument 0x878 should be changed to 0x0)

I think this is a small bug in header files.

 

Haifeng

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