• Frank Schäfer's avatar
    usb: pl2303: add two comments concerning the supported baud rates with HX chips · c23bda36
    Frank Schäfer authored
    I've found some new datasheets which describe some additionally
    supported standard baud rates and I've verified them with my HX
    (rev. 3A) device. But adding support for individual (chip type
    specific) baud rates would add a good amount of extra code (especially
    when support for further chips will be added to the driver one day),
    which makes no sense as long as we are not using the direct baud rate
    encoding method for newer chips.
    So for now, just drop a comment about these additionally supported baud
    rates.
    
    The second comment is about the baud rate differences between the two
    encoding methods. In theory, we could optimize the code a bit by
    comparing the resulting baud rates of both methods and selecting the
    one which is closer to the requested baud rate. But that seems to be a
    bit overkill, because the differences are very small and the device
    likely uses the same baud rate generator for both methods so that the
    resulting baud rate would be the same.
    Signed-off-by: default avatarFrank Schäfer <fschaefer.oss@googlemail.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    c23bda36
pl2303.c 26.2 KB