can: flexcan: add more quirks to describe RX path capabilities

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Most flexcan IP cores support 2 RX modes:
- FIFO
- mailbox

Some IP core versions cannot receive CAN RTR messages via mailboxes.
This patch adds quirks to document this.

This information will be used in a later patch to switch from FIFO to
more performant mailbox mode at the expense of losing the ability to
receive RTR messages. This trade off is beneficial in certain use
cases.

Link: https://lore.kernel.org/all/20220107193105.1699523-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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Marc Kleine-Budde 2022-01-07 14:29:15 +01:00

parent 34ea4e1c99

commit c5c8859104

1 changed files with 54 additions and 12 deletions

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drivers/net/can/flexcan/flexcan-core.c

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