Add a new generic binding that CAN drivers can use to specify the max
arbitration and data bit rate supported by a transceiver. This is
useful since in some instances 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 fixed-transceiver the user does not have to define it in their
device tree.
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
can: fixed-transceiver: Add documentation for CAN fixed transceiver
bindings
can: m_can: Update documentation to mention new fixed transceiver
binding
can: m_can: Add call to of_can_transceiver_fixed
.../bindings/net/can/fixed-transceiver.txt | 42 +++++++++++++++
.../devicetree/bindings/net/can/m_can.txt | 10 ++++
drivers/net/can/dev.c | 59 ++++++++++++++++++++++
drivers/net/can/m_can/m_can.c | 2 +
include/linux/can/dev.h | 5 ++
5 files changed, 118 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/can/fixed-transceiver.txt
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2.10.0
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