From: Stefan Wahren <stefan.wahren@i2se.com>
To: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
"David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>,
Marcel Holtmann <marcel@holtmann.org>,
Sebastian Reichel <sre@kernel.org>,
netdev <netdev@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH RFC v4 10/10] tty: serdev: add functions to retrieve common UART settings
Date: Tue, 28 Mar 2017 18:33:45 +0200 [thread overview]
Message-ID: <0e62c3e6-e225-f958-a4af-2f43093beb5b@i2se.com> (raw)
In-Reply-To: <CAL_JsqJ3b2zTGNHNVtt6Y+k23iw+2G2z-Jm2786a8CEzZBS7=g@mail.gmail.com>
Am 27.03.2017 um 22:00 schrieb Rob Herring:
> On Mon, Mar 27, 2017 at 8:37 AM, Stefan Wahren <stefan.wahren@i2se.com> wrote:
>> Currently serdev core doesn't provide functions to retrieve common
>> UART settings like data bits, stop bits or parity. This patch adds
>> the interface to the core and the necessary implementation for
>> serdev-ttyport.
> It doesn't provide them because why do you need to know? The attached
> device should request the settings it needs and be done with it. Maybe
> some devices can support a number of settings and you could want
> negotiate the settings with the UART, though surely 8N1 is in that
> list. It's rare to see something that's not 8N1 from what I've seen.
During development it's very helpful to check the current UART settings
and error counter. Currently i can't see a replacement for
/sys/class/tty/ttyXYZ .
Are there any plans about it?
>
> Rob
prev parent reply other threads:[~2017-03-28 16:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-27 13:37 [PATCH RFC v4 00/10] net: qualcomm: add QCA7000 UART driver Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 01/10] net: qualcomm: remove unnecessary includes Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 02/10] net: qca_debug: use net_device_ops instead of direct call Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 03/10] net: qualcomm: move qcaspi_tx_cmd to qca_spi.c Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 04/10] net: qualcomm: rename qca_framing.c to qca_common.c Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 05/10] net: qualcomm: prepare frame decoding for UART driver Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 06/10] net: qualcomm: make qca_common a separate kernel module Stefan Wahren
2017-03-27 15:44 ` Dan Williams
2017-03-28 16:24 ` Stefan Wahren
2017-03-28 17:18 ` Dan Williams
2017-03-27 13:37 ` [PATCH RFC v4 07/10] dt-bindings: net: add binding for QCA7000 UART Stefan Wahren
2017-03-27 20:30 ` Rob Herring
2017-03-28 16:18 ` Stefan Wahren
2017-04-03 13:23 ` Rob Herring
2017-03-27 13:37 ` [PATCH RFC v4 08/10] net: qualcomm: add QCA7000 UART driver Stefan Wahren
2017-03-27 13:37 ` [PATCH RFC v4 09/10] tty: serdev-ttyport: return actual baudrate from ttyport_set_baudrate Stefan Wahren
2017-03-27 19:50 ` Rob Herring
2017-03-27 13:37 ` [PATCH RFC v4 10/10] tty: serdev: add functions to retrieve common UART settings Stefan Wahren
2017-03-27 20:00 ` Rob Herring
2017-03-28 16:33 ` Stefan Wahren [this message]
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