Re: [PATCH v3 7/7] docs: networking: device drivers: can: add flexcan - Marc Kleine-Budde

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           |
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