i.mx283 porting u-boot duart no print

[Eason_Lian]

Hi all,

The board use AUART0_CTS as DUART_RX, AUART0_RTS as DUART_TX.

Set the board boot from usb otg mode,and connect to PC which installed Ubuntu14.04.Then Ubuntu can identify one HID FSL device.

I use mxs_ldr can download u-boot.sb file.If use the .sb file from version u-boot-2009(other person porting),there are normal prints in duart.

I don't know how to set USE_ALT_DEBUG_UART_PINS to 01 in u-boot-2014.If I only change DUART pinmux in the file iomux.c,the debug console is also no prints.

Can you help me fix this problem(duart no prints)?

Best Regards & Thanks!

Eason

[jimmychan]

would you tell me which BSP are you using?

for your reference, here is an example:

IMX28 Pin Configuration

[Eason_Lian]

Hi jimmychan,

The source codes which I use is git://github.com/Freescale/u-boot-imx.git (branch patches-2014.10).

I'm not sure about what is the best time to set USE_ALT_DEBUG_UART_PINS.And if the board is power off,this registor could be reset or not?

Thanks!

Best regards

Eason