Hardware Serial - able to set other baud rate?

Quick question, the docs say that the maximum baud rate supported by the Photon hardware serial channel is 115,200.

Is this really the case? I have a hardware application that needs a whopping 921,600 baud, believe it or not!

@UMD, that is the case. I suspect this is a balance between UART speed and the interrupt overhead used to service the UART.

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