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Allwinner a33 irda
Allwinner a33 irda






allwinner a33 irda

What makes us a little bit suspicious is that STM in their own demo board didn’t follow their Hardware Guide and were wiring one of their High speed USB as OTG and connecting USB hub to the other, ignoring the Full speed USB at all. The two High Speed USB hosts work as expected, but the USB-OTG has issue summarized here: Here is our schematic which follows above guide: STM32MP1 has two High speed USB hosts and one Full speed USB-OTG, here is snip from their Hardware development document: UPDATE: As some people wanted to know what was the Ethernet issue we were struggling so long, I posted in the comment section.įor the USB-OTG my guess is that it’s also some silly issue so people may help: We hope meantime to solve these two last issues and run production.

allwinner a33 irda

New prototypes rev.B now are in production, the Chinese New Year will delay them to end of February. Two things on this board left not complete:

  • PMU and LiPo charger battery support – works.
  • Two USB High speed hosts with 1A current – works!.
  • We had lot of troubles around the Ethernet, but now it works pretty well!.
  • These who monitor our Official images at probably nottice that we already have images with Debian Buster and Ubuntu Focal for STM32MP1 where almost everything now work with mainline Linux Kernel 5.10.12. ST demo board uses Yocto with kernel 5.4, our images use Linux Kernel 5.10.12

    allwinner a33 irda

    STMP1-OLinuXino-LIME2 Industrial grade Linux Computer project took us almost an year of work to build proper software support for our hardware with mainline uboot and kernel.








    Allwinner a33 irda