[PATCH v4 0/4] can: Support transceiver based bit rate limit

[Franklin S Cooper Jr]

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

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2.9.4.dirty