From: Faiz Abbas <faiz_abbas@ti.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>, <wg@grandegger.com>,
<robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: <linux-can@vger.kernel.org>, <netdev@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<nsekhar@ti.com>, <fcooper@ti.com>, <robh@kernel.org>,
<Wenyou.Yang@microchip.com>, <sergei.shtylyov@cogentembedded.com>
Subject: Re: [PATCH v6 1/6] can: dev: Add support for limiting configured bitrate
Date: Wed, 3 Jan 2018 17:51:40 +0530 [thread overview]
Message-ID: <5dadca68-f8ae-e708-5a5f-5d2a8876cf40@ti.com> (raw)
In-Reply-To: <8d973da8-df40-e37e-377f-50666db382fe@pengutronix.de>
Hi,
On Tuesday 02 January 2018 09:45 PM, Marc Kleine-Budde wrote:
> On 12/22/2017 02:31 PM, Faiz Abbas wrote:
>> From: Franklin S Cooper Jr <fcooper@ti.com>
>>
>> Various CAN or CAN-FD IP may be able to run at a faster rate than
>> what the transceiver the CAN node is connected to. This can lead to
>> unexpected errors. However, CAN transceivers typically have fixed
>> limitations and provide no means to discover these limitations at
>> runtime. Therefore, add support for a can-transceiver node that
>> can be reused by other CAN peripheral drivers to determine for both
>> CAN and CAN-FD what the max bitrate that can be used. If the user
>> tries to configure CAN to pass these maximum bitrates it will throw
>> an error.
>
> Please add support to read the maximum bitrate via netlink. Have a look
> at 12a6075cabc0 ("can: dev: add CAN interface termination API"). I think
> you need to extend the following functions: can_get_size() and
> can_fill_info().
Will add in the next version.
Thanks,
Faiz
>
> Marc
>
next prev parent reply other threads:[~2018-01-03 12:23 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-22 13:31 [PATCH v6 0/6] Add M_CAN Support for Dra76 platform Faiz Abbas
2017-12-22 13:31 ` [PATCH v6 1/6] can: dev: Add support for limiting configured bitrate Faiz Abbas
2018-01-02 13:00 ` Marc Kleine-Budde
2018-01-03 12:19 ` Faiz Abbas
2018-01-02 16:15 ` Marc Kleine-Budde
2018-01-03 12:21 ` Faiz Abbas [this message]
2017-12-22 13:31 ` [PATCH v6 2/6] can: m_can: Add call to of_can_transceiver Faiz Abbas
2017-12-22 13:31 ` [PATCH v6 3/6] can: m_can: Add PM Runtime Faiz Abbas
2018-01-02 16:07 ` Marc Kleine-Budde
2018-01-03 12:39 ` Faiz Abbas
2018-01-03 14:25 ` Marc Kleine-Budde
2018-01-03 15:06 ` Faiz Abbas
2018-01-03 15:17 ` Marc Kleine-Budde
2018-01-04 15:17 ` Faiz Abbas
2018-01-04 15:18 ` Marc Kleine-Budde
2018-01-05 1:23 ` Yang, Wenyou
2017-12-22 13:31 ` [PATCH v6 4/6] can: m_can: Support higher speed CAN-FD bitrates Faiz Abbas
2018-01-02 13:35 ` Marc Kleine-Budde
2018-01-03 12:55 ` Faiz Abbas
2017-12-22 13:31 ` [PATCH v6 5/6] dt-bindings: can: m_can: Document new can transceiver binding Faiz Abbas
2017-12-22 13:31 ` [PATCH v6 6/6] dt-bindings: can: can-transceiver: Document new binding Faiz Abbas
2017-12-29 3:38 ` [PATCH v6 0/6] Add M_CAN Support for Dra76 platform Yang, Wenyou
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