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Failed to boot i.mx6ul from usdhc2

Question asked by Dhvanil Patel on Apr 28, 2016
Latest reply on Apr 28, 2016 by igorpadykov

Hi,

 

We are developing produce based on i.MX6UL. We are facing an issue while booting the board from uSDHC2 port. We are using below mention pinmux for uSCHD2. We have set the boot config register to boot device from uSDHC2 port along with boot mode setting to internal boot. When we power up the device, The i.MX6UL Boot ROM is not generate any clock on usdhc2.CLK (LCD_DATA19) pin to boot from uSDHC2

 

 

#

Name

Default

 

ALT0ALT8
A13LCD_DATA18gpio3.IO[23]lcdif.DATA[18]usdhc2.CMD
D14LCD_DATA19gpio3.IO[24]lcdif.DATA[19]usdhc2.CLK
C14LCD_DATA20

gpio3.IO[25]

lcdif.DATA[20]usdhc2.DATA0
B14LCD_DATA21gpio3.IO[26]lcdif.DATA[21]usdhc2.DATA1
A14LCD_DATA22gpio3.IO[27]lcdif.DATA[22]usdhc2.DATA2
B16LCD_DATA23gpio3.IO[28]lcdif.DATA[23]usdhc2.DATA3

 

 

During debugging, we found,The i.MX6UL boot ROM generates clock on "NAND_RE_B" pin.

 

Is there any way available to  set Boot ROM to generate CLK on "usdhc2.CLK (LCD_DATA19)"  and boot from uSDHC2 port with above mentioned pin settings?

 

-

Dhvanil Patel

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