Backport of upstream patch series [1].
Note: The patch "[PATCH 4.14 1/4] can: kvaser_usb: Add struct kvaser_usb_dev_cfg" is added for this backport, and was not part of the original series.
When fixing the CAN clock frequency, fb12797ab1fe ("can: kvaser_usb: get CAN clock frequency from device"), I introduced a regression.
For Leaf devices based on M32C, the firmware expects bittiming parameters calculated for 16MHz clock. Regardless of the actual clock frequency.
This regression affects M32C based Leaf devices with non-16MHz clock.
Also correct the bittiming constants in kvaser_usb_leaf.c, where the limits are different depending on which firmware/device being used.
[1] https://lore.kernel.org/linux-can/20220603083820.800246-1-extja@kvaser.com/
Jimmy Assarsson (4): can: kvaser_usb: Add struct kvaser_usb_dev_cfg can: kvaser_usb: replace run-time checks with struct kvaser_usb_driver_info can: kvaser_usb: fix CAN clock frequency regression can: kvaser_usb: fix bittiming limits
drivers/net/can/usb/kvaser_usb.c | 325 +++++++++++++++++++------------ 1 file changed, 201 insertions(+), 124 deletions(-)