[packetlost]

Xtensa is licensed from Tensilica which is both an American company, but also used extensively in non-consumer facing industrial systems. It's not that nobody uses it, it's that you're likely not even close to the target market they're made for. Espressif is a fabless semiconductor company, they don't actually make their chips, they license a bunch of parts, design some developer boards, and write software around it. They're much closer to a software company than a hardware company.

[ranma42]

Athereos wireless cards (ath10k) have also used Xtensa. And the audio DSP in newer intel chipsets (e.g. Apollo Lake) is also Xtensa-based, but unfortunately quite locked down (signed firmware only). See https://thesofproject.github.io/latest/platforms/index.html Also ISTR that older Radeon graphics cards used Xtensa (e.g. in the Unified Video Decoder).