can: xilinx_can: add support for Xilinx CAN FD core

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Add support for Xilinx CAN FD core.

The major difference from the previously supported cores is that there
are TX mailboxes instead of a TX FIFO and the RX FIFO access method is
different.

We only transmit one frame at a time to prevent the HW from reordering
frames (it uses CAN ID priority order).

Support for CAN FD protocol is not added yet.

v2: Removed unnecessary "rx-mode" DT property and wrapped some long
    lines.

Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi>
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

...

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Anssi Hannula 2018-02-27 10:06:51 +02:00 • committed by Marc Kleine-Budde

parent 1598efe57b

commit 9e5f1b273e

1 changed files with 259 additions and 44 deletions

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drivers/net/can/xilinx_can.c

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