From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: [PATCH 1/4] tty: serial: meson: allow baud-rates higher than 115200 Date: Wed, 18 Jan 2017 13:44:42 -0800 Message-ID: References: <20170115223255.10350-1-martin.blumenstingl@googlemail.com> <20170115223255.10350-2-martin.blumenstingl@googlemail.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20170115223255.10350-2-martin.blumenstingl-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> (Martin Blumenstingl's message of "Sun, 15 Jan 2017 23:32:52 +0100") Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Martin Blumenstingl Cc: linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, jslaby-IBi9RG/b67k@public.gmane.org, gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org, carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, catalin.marinas-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org List-Id: devicetree@vger.kernel.org Martin Blumenstingl writes: > The vendor driver allows setting baud-rates higher than 115200 baud. > There is a check in the vendor driver which prevents using more than > 115200 baud during startup, however it does not have such a check in > .set_termios. > Higher baud-rates are often used by the bluetooth modules embedded into > the SDIO wifi chips (Amlogic devices use brcmfmac based wifi chips quite > often, 2000000 baud seems to be a common value for the UART baud-rate in > Amlogic's "libbt"). > > I have tested this on a Meson GXL device with uart_A (to which the > bluetooth module is connected, where initialization times out with > 115200 baud) and uart_AO (which I manually set to 2000000 baud and then > connected with my USB UART adapter to that). > > Signed-off-by: Martin Blumenstingl Acked-by: Kevin Hilman -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html