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imx8qxp PCIe iATU configure

Question asked by Li Jun on May 12, 2019
Latest reply on May 13, 2019 by igorpadykov

I checked linux driver code there is "cpu_addr_fixup" when configuring iATU, and the git commit history recorded as below:

- The HSIO address map as viewed from system level is as shown below.
  address [31:24]    Local address    Target    Address Size
  5F                 0                HSIO      16MB
  60-6F              40-4F            HSIO      256MB
  70-7F              80-8F            HSIO      256MB
  So, the cpu_addr_fixup is required to enable i.MX8QM/QXP PCIe.

https://lkml.org/lkml/2019/3/13/151

 

But, there is no any relevant description in the latest reference manual, Can NXP provide the detail description about this feature?

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