AnsweredAssumed Answered

i.MX28 u-boot fail

Question asked by JHY on Nov 6, 2014
Latest reply on Nov 7, 2014 by igorpadykov

Hi, I use i.MX28 in a custom board and want to use only VDD5V power source.

 

After applying L2.6.35_10.12_5V_SUPPLY_PATCH, SPL runs without problems but u-boot loading is fail printing out consol messages 'Undefined Ins'.

 

3.3V, 1.8V, 1.5V outputs are good and memory access tests have no error in SPL, only u-boot loading has problems.

 

Futhermore when I use DCDC4P2 power source in same board, it works all right, SPL, u-boot, lnux and every apps.

 

Are there missing pieces?

 

The registers are below,

 

All of DCDC_ENABLE=DCDC_XFER=LINREG_OFFSET=DISABLE_FET=0 and ENABLE_LINREG=1

 

5vctrl  (2403F592),

dcdc4p2 (A000001F),

vddd    (00F00710),

vdda    (000F070C),

vddio   (00070406),

vddmem  (00000230)

 

 

 

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