UUU interfacing options other than USB OTG

[danie007]

Hi @nxpfrankli

We want to use UUU for flasing eMMC of i.MX 6SX based custom board. We don't have the USB OTG port available (yet!).

Can we interface the board in UUU with any other interface?

Such as,

1. USB Host
2. UART
3. Ethernet

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CC @tkmozhi

[nxpfrankli]

The key is that ROM only support USB serial download mode. If there are already software running at other storage, the existed uboot tools can already hang USB Host (usb start), UART (rz), Ethernet(tftp).

[danie007]

@nxpfrankli thank for the answer. ✌🏾 Recently we've come across SDP in U-Boot. Is it possible to utilise that (somehow!?) in the UUU tool.

doc/imx/misc/sdp.txt

We've seen the references for imx_usb but not the UUU.

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CC @tkmozhi

[nxpfrankli]

Yes, you can uuu to talk with uboot with SDP.

You need write a script

CFG: SDP -chip uboot -pid -vid SDP: .....

If you just do test, you can change uboot's pid/vid is the same as built-in one.