This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM69A: PCIe CLKREQ# and SD card on MMC1 coexistence

Part Number: AM69A
Other Parts Discussed in Thread: AM69

Tool/software:

Dear TI team,

I am preparing design with AM69a processor. I need to use (among others) all 4 PCIe controllers (connected to M.2 slots) and CPSW2G .

I would like to boot AM69a from SD card. As far as I can find SD card is supported on MMC1 controller only. When I configure MMC1 I get collisions of its pins with CLKREQ# pins on all PCIe controllers and some RGMII pins on CPSW2G core.

I have these questions

  1. Is SD card really supported on MMC1 controller only (MMC0 doesn't collide with any pins)?
  2. Is there any SW way( in Linux) of handling CLKREQ# on any GPIO?
  3. Can I safely omit CLKREQ#  signals from PCIe interfaces?
  4. Can you think of any other way around?

Thanks for information

Marek