Or Fire-ish hardware leaking into the Kindle eInk SW stack

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FWIW, there are also hints from Kobo moving away from i.MX (but, similarly to the Fire situation on Kindle, it might also be a case of Tolino pollution).
Then there's the strange mess that is the reMarkable 2: an i.MX 7D, a SoC known for supporting a configuration with an EPDC (Hi, Zelda!), but without an EPDC in the rM board.