From: Marc Kleine-Budde <mkl@pengutronix.de>
To: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Cc: linux-can@vger.kernel.org
Subject: Re: [PATCH v3 7/7] docs: networking: device drivers: can: add flexcan
Date: Sat, 8 Jan 2022 20:51:48 +0100 [thread overview]
Message-ID: <20220108195148.auem62moegm5rnn7@pengutronix.de> (raw)
In-Reply-To: <CABGWkvpKLc13vSDUDquSZeR+2t9tEenAduxtWeyLK4xpRdKKig@mail.gmail.com>
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On 08.01.2022 14:12:27, Dario Binacchi wrote:
> > +On/off RTR frames reception
> > +===========================
> > +
> > +For most flexcan IP cores the driver supports 2 RX modes:
> > +
> > +- FIFO
> > +- mailbox
> > +
> > +The older flexcan cores (integrated into the i.MX25, i.MX28, i.MX35
> > +and i.MX53 SOCs) only reception of RTR frames if the controller is
> > +configured for RX-FIFO mode.
>
> only receive RTR frames
>
> > +
> > +The RX FIFO mode uses a hardware FIFO with a depth of 6 CAN frames,
> > +while the mailbox mode uses a software FIFO with a depth of up to 62
> > +CAN frames. With the help of the bigger buffer, the mailbox mode
> > +performs better under high system load situations.
> > +
> > +As reception of RTR frames is part of the CAN standard, all flexcan
> > +core come up in a mode where RTR reception is possible.
>
> all flexcan cores
Fixed both.
Thanks,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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prev parent reply other threads:[~2022-01-08 19:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-07 19:30 [PATCH v2 1/7] can: flexcan: change RX-FIFO feature at runtime Marc Kleine-Budde
2022-01-07 19:30 ` [PATCH v3 1/7] can: flexcan: move driver into separate sub directory Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 2/7] can: flexcan: allow to change quirks at runtime Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 3/7] can: flexcan: rename RX modes Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 4/7] can: flexcan: add more quirks to describe RX path capabilities Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 5/7] can: flexcan: add ethtool support to change rx-rtr setting during runtime Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 6/7] docs: networking: device drivers: add can sub-folder Marc Kleine-Budde
2022-01-07 19:31 ` [PATCH v3 7/7] docs: networking: device drivers: can: add flexcan Marc Kleine-Budde
2022-01-08 13:12 ` Dario Binacchi
2022-01-08 19:51 ` Marc Kleine-Budde [this message]
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