Add a new generic binding that CAN drivers can be used to specify the max bit rate supported by a transceiver. This is useful since in some instances since the maximum speeds may be limited by the transceiver used. However, transceivers may not provide a means to determine this limitation at runtime. Therefore, create a new binding that mimics "fixed-link" that allows a user to hardcode the max speeds that can be used.
Also add support for this new binding in the MCAN driver. Note this is an optional subnode so even if a driver adds support for parsing can-transceiver the user does not have to define it in their device tree. Version 4 changes: Switch from fixed-transceiver to can-transceiver Drop unit address that snuck back in again. Indicate that can-transceiver is a subnode and not a property in documentation Version 3 changes: Switch from having two "max bitrates" to one universal bitrate. Version 2 changes: Rename function Define proper variable default Drop unit address Move check to changelink function Reword commit message Reword documentation Franklin S Cooper Jr (4): can: dev: Add support for limiting configured bitrate dt-bindings: can: can-transceiver: Document new binding dt-bindings: can: m_can: Document new can transceiver binding can: m_can: Add call to of_can_transceiver .../bindings/net/can/can-transceiver.txt | 24 +++++++++++ .../devicetree/bindings/net/can/m_can.txt | 9 ++++ drivers/net/can/dev.c | 50 ++++++++++++++++++++++ drivers/net/can/m_can/m_can.c | 2 + include/linux/can/dev.h | 5 +++ 5 files changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/can/can-transceiver.txt -- 2.9.4.dirty