From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Johan Hovold <johan@kernel.org>
Cc: Karoly Pados <pados@pados.hu>, linux-usb@vger.kernel.org
Subject: [5/5] USB: serial: cp210x: improve line-speed handling for CP2104 and CP2105
Date: Wed, 18 Jul 2018 15:26:30 +0200 [thread overview]
Message-ID: <20180718132630.GE8278@kroah.com> (raw)
On Wed, Jul 18, 2018 at 02:25:01PM +0200, Johan Hovold wrote:
> CP2104 and the ECI interface of CP2105 support further baud rates than
> the ones specified in AN205 table 1, and we can use the same equations
> as for CP2102N to determine and report back the actual baud rates used.
>
> Note that this could eventually be generalised also to CP2108, which
> uses a different base clock. There appears to be an error in the CP2108
> equations which needs to be confirmed on actual hardware first however
> (specifically, the subtraction of one from the divisor appears to be
> incorrect as it introduces larger errors).
>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
> drivers/usb/serial/cp210x.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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next reply other threads:[~2018-07-18 13:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-18 13:26 Greg Kroah-Hartman [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-07-18 19:57 [5/5] USB: serial: cp210x: improve line-speed handling for CP2104 and CP2105 Johan Hovold
2018-07-18 12:25 Johan Hovold
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