Advertise CANFD capability for GRCANFD hardware by enabling
CAN_CTRLMODE_FD flag and providing CANFD timing operations.

Signed-off-by: Arun Muthusamy <arun.muthusamy@gaisler.com>
---
 drivers/net/can/grcan.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c
index e6f3cd36ea66..120e722cc59e 100644
--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
@@ -1749,11 +1749,14 @@ static int grcan_setup_netdev(struct platform_device *ofdev,
 	priv->ofdev_dev = &ofdev->dev;
 	priv->regs = base;
 	priv->can.bittiming_const = hwcap->bt_const;
+	priv->can.fd.data_bittiming_const = hwcap->bt_const;
 	priv->can.do_set_mode = grcan_set_mode;
 	priv->can.do_get_berr_counter = grcan_get_berr_counter;
 	priv->can.clock.freq = ambafreq;
 	priv->can.ctrlmode_supported =
 		CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_ONE_SHOT;
+	if (hwcap->fd)
+		priv->can.ctrlmode_supported |= CAN_CTRLMODE_FD;
 	priv->need_txbug_workaround = txbug;
 	priv->hwcap = hwcap;

--
2.51.0