AnsweredAssumed Answered

Can not access PCIe DBI address

Question asked by Peng Cheng on Jul 23, 2018
Latest reply on Jul 25, 2018 by Peng Cheng

Hi,

 

My board is i.MX8MQ-EVK 700-29615 REVA.

 

I want to access PCIe dbi address in U-Boot.

But when I access pcie0@0x33800000 or pcie1@0x33c00000, it will hang.

 

I thought maybe it is the power-domain problem.

I add SMC calls myself before I access dbi address, somthing like:

SMC

0xC2000000 (smc_fid)

0x3 (FSL_SIP_CONFIG_GPC_PM_DOMAIN)

1/10 (pcie0/pcie1 domain id)

1 (on)

 

But it still hangs. Did I miss something? Please help me.

 

BR,

Peng

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